APA

Klimm L. E., Starkey O. P. & Hall N. F. (1937). Introductory economic geography. New York: Harcourt, Brace and company.

Chicago

Klimm Lester Earl, Starkey Otis Paul and Hall Norman Foster. 1937. Introductory economic geography. New York: Harcourt, Brace and company.

Harvard

Klimm L. E., Starkey O. P. and Hall N. F. (1937). Introductory economic geography. New York: Harcourt, Brace and company.

MLA

Klimm Lester Earl, Starkey Otis Paul and Hall Norman Foster. Introductory economic geography. New York: Harcourt, Brace and company. 1937.