APA引文

Hayes, J. W. (1966). Protecting our food. U.S. Govt. Printing Office.

Chicago Style (17th ed.) Citation

Hayes, John Williams. Protecting Our Food. [Washington]: U.S. Govt. Printing Office, 1966.

MLA引文

Hayes, John Williams. Protecting Our Food. U.S. Govt. Printing Office, 1966.