APA (7th ed.) Citation

ebrary, Inc, & Carvalho, W. M. (2009). U.S. coins: The price of a penny. Nova Science Publishers.

Chicago Style (17th ed.) Citation

ebrary, Inc, and Walter M. Carvalho. U.S. Coins: The Price of a Penny. New York: Nova Science Publishers, 2009.

MLA (9th ed.) Citation

ebrary, Inc, and Walter M. Carvalho. U.S. Coins: The Price of a Penny. Nova Science Publishers, 2009.