Cita APA

Pearl, R. M. (1955). How to know the minerals and rocks. New York: McGraw-Hill.

Chicago Style Citation

Pearl, Richard M. How to Know the Minerals and Rocks. New York: McGraw-Hill, 1955.

Cita MLA

Pearl, Richard M. How to Know the Minerals and Rocks. New York: McGraw-Hill, 1955.

Atenció: Aquestes cites poden no estar 100% correctes.