APA

(2014). What's that rock or mineral?. New York, New York: DK Publishing.

Chicago

2014. What's that rock or mineral?. New York, New York: DK Publishing.

Harvard

(2014). What's that rock or mineral?. New York, New York: DK Publishing.

MLA

What's that rock or mineral?. New York, New York: DK Publishing. 2014.