Hayes, J. W. (1966). Protecting our food. U.S. Govt. Printing Office.
芝加哥风格引文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.
警告：这些引文格式不一定是100％准确.