A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Presidential publications
Parenthetical citations–reference list style: citing specific types of sources
Part II. Source Citation

Presidential proclamations, executive orders, vetoes, addresses, and the like are published in the Weekly Compilation of Presidential Documents and in Public Papers of the Presidents of the United States. Proclamations and executive orders are also carried in the daily Federal Register and then published in title 3 of the Code of Federal Regulations. Once they have been published in the Code, use that as your source.

R: U.S. President. 1984. Proclamation. Caribbean Basin Economic Recovery Act, Proclamation 5142, Amending Proclamation 5133. Federal Register 49, no. 2, p. 341 (January 4).

U.S. President. 1971. Executive Order no. 11,609. Code of Federal Regulations, title 3, p. 586 (1971—75).

P: (U.S. President 1984, 341)

(U.S. President 1971)

The public papers of U.S. presidents are collected in two multivolume works: Compilation of the Messages and Papers of the Presidents, 1789—1897, and, for subsequent administrations, Public Papers of the Presidents of the United States.

R: Hoover, Herbert. 1977. Public Papers of the Presidents of the United States: Herbert Hoover, 1929—33. Vol. 4. Washington, DC: Government Printing Office.

P: (Hoover 1977, 178—83)