The official website of the US Court system
https://www.uscourts.gov/about-federal-courts/educational-resources/about-educational-outreach/activity-resources/about#:~:text=The best-known power of,v. Madison (1803).:
The best-known power of the Supreme Court is judicial review, or the ability of the Court to declare a Legislative or Executive act in violation of the Constitution, is not found within the text of the Constitution itself. The Court established this doctrine in the case of Marbury v. Madison (1803).
Cornell Law School
https://www.law.cornell.edu/constit...lause-1/the-establishment-of-judicial-reviewl:
Practically all of the framers who expressed an opinion on the issue in the Convention appear to have assumed and welcomed the existence of court review of the constitutionality of legislation,
730 and prior to
Marbury the power seems very generally to have been assumed to exist by the Justices themselves.
731 In enacting the Judiciary Act of 1789, Congress explicitly provided for the exercise of the power,
732 and in other debates questions of constitutionality and of judicial review were prominent.
733 Nonetheless, although judicial review is consistent with several provisions of the Constitution and the argument for its existence may be derived from them, these provisions do not compel the conclusion that the Framers intended judicial review nor that it must exist. It was Chief Justice Marshall’s achievement that, in doubtful circumstances and an awkward position, he carried the day for the device, which, though questioned, has expanded and become solidified at the core of constitutional jurisprudence.
Annenberg says it is "implied"
https://www.annenbergclassroom.org/glossary_term/judicial-review/:
The concept of judicial review was created during the founding of the United States and specifically included in the constitutional governments of some of the 13 original American states, such as Massachusetts, New Hampshire, and New York. Judicial review is not mentioned in the U.S. Constitution, but most constitutional experts claim that it is implied in Articles III and VI of the document.
Article III says that the federal judiciary has power to make judgments in all cases pertaining to the Constitution, statutes, and treaties of the United States. Article VI implies that the judicial power of the federal courts of law must be used to protect and defend the supreme authority of the Constitution against acts in government that violate or contradict it.
Article VI says: “This Constitution, and the Laws of the United Sates which shall be made in Pursuance thereof; and all Treaties made, or which shall be made under the authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State to the Contrary notwithstanding.
From the US Supreme Court website
https://www.supremecourt.gov/about/constitutional.aspx:
While the function of judicial review is not explicitly provided in the Constitution, it had been anticipated before the adoption of that document. Prior to 1789, state courts had already overturned legislative acts which conflicted with state constitutions. Moreover, many of the Founding Fathers expected the Supreme Court to assume this role in regard to the Constitution; Alexander Hamilton and James Madison, for example, had underlined the importance of judicial review in the Federalist Papers, which urged adoption of the Constitution.