APA (7th ed.) Citation

Crawford, C. C., & McDonald, L. P. (1929). Modern methods in teaching geography. Houghton, Miffin.

Chicago Style (17th ed.) Citation

Crawford, Claude C., and Lois P. McDonald. Modern Methods in Teaching Geography. Boston: Houghton, Miffin, 1929.

MLA (9th ed.) Citation

Crawford, Claude C., and Lois P. McDonald. Modern Methods in Teaching Geography. Houghton, Miffin, 1929.