Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.