APA引文

(Earth Works Group (U.S. (1989). 50 simple things you can do to save the earth. Earthworks Press.

Chicago Style (17th ed.) Citation

(Earth Works Group (U.S. 50 Simple Things You Can Do to Save the Earth. .Berkeley, CA: Earthworks Press, 1989.

MLA引文

(Earth Works Group (U.S. 50 Simple Things You Can Do to Save the Earth. Earthworks Press, 1989.

警告：這些引文格式不一定是100％准確.