Cita APA

Pearl Richard M. (1955). How to know the minerals and rocks. New York: The new American Library.

Chicago Style Citation

Pearl Richard M. How to Know the Minerals and Rocks. New York: The new American Library, 1955.

Cita MLA

Pearl Richard M. How to Know the Minerals and Rocks. New York: The new American Library, 1955.

Atenció: Aquestes cites poden no estar 100% correctes.