Gilbert, G. K., & Perry Brigham, A. (1902). Introduction to physical geography. D. Appleton.
Chicago Style (17th ed.) CitationGilbert, Grove Karl, and Albert Perry Brigham. Introduction to Physical Geography. New York: D. Appleton, 1902.
MLA (9th ed.) CitationGilbert, Grove Karl, and Albert Perry Brigham. Introduction to Physical Geography. D. Appleton, 1902.