APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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