Dept. of Agriculture. (1967). Outdoors USA. [Washington: The United States Government Printing Office.
Trích dẫn kiểu ChicagoDept. of Agriculture. Outdoors USA. [Washington: The United States Government Printing Office, 1967.
MLA引文Dept. of Agriculture. Outdoors USA. [Washington: The United States Government Printing Office, 1967.
警告:這些引文格式不一定是100%准確.