Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

Pearl, Richard Maxwell. How to Know the Minerals and Rocks. McGraw-Hill, 1955.