APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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