APA ציטוט

(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.

ציטוט MLA

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