Gaya APA

Knauer, K. (2012). Global warming : The Causes, The Perils, The Solutions, The Actions : 51 Things you can do (cet. 13). New York: Time Books.

Gaya MLA

Knauer, Kenny. "Global warming : The Causes, The Perils, The Solutions, The Actions : 51 Things you can do". cet. 13 New York: Time Books, 2012. Text.