Pearl, R. M. (1955). How to know the minerals and rocks. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoPearl, Richard M. How to Know the Minerals and Rocks. New York: McGraw-Hill, 1955.
MLA引文Pearl, Richard M. How to Know the Minerals and Rocks. New York: McGraw-Hill, 1955.
警告：這些引文格式不一定是100％准確.