APA (7th ed.) Citation

Worcester, P. G. (1948). A textbook of geomorphology (2d ed.). D. Van Nostrand Co..

Chicago Style (17th ed.) Citation

Worcester, Philip G. A Textbook of Geomorphology. 2d ed. New York: D. Van Nostrand Co., 1948.

MLA (9th ed.) Citation

Worcester, Philip G. A Textbook of Geomorphology. 2d ed. D. Van Nostrand Co., 1948.