APA Style

Zoehfeld, K, W., Meisel, P. (1998). What is the World Made Of? All About Solids, Liquids and Gases . New York: Harper Collins Publishers Inc..

MLA Style

Zoehfeld, Kathleen, Weidner., Meisel, Paul. "What is the World Made Of? All About Solids, Liquids and Gases". New York: Harper Collins Publishers Inc., 1998. Text.