Cita APA (7a ed.)

Pearl, R. M. (1951). Guide to geologic literature (5a. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Pearl, Richard M. Guide to Geologic Literature. 5a. ed. New York: McGraw-Hill, 1951.

Cita MLA (8a ed.)

Pearl, Richard M. Guide to Geologic Literature. 5a. ed. McGraw-Hill, 1951.