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.
Warning: These citations may not always be 100% accurate.