APA

United States, United States, . (19). Public papers of the presidents of the United States. Washington: Office of the Federal Register.

Chicago

United States, United States, . 19. Public papers of the presidents of the United States. Washington: Office of the Federal Register.

Harvard

United States, United States, . (19). Public papers of the presidents of the United States. Washington: Office of the Federal Register.

MLA

United States, United States, . Public papers of the presidents of the United States. Washington: Office of the Federal Register. 19.