APA (7th ed.) Citation

Stevens, S. K., Cordier, R. W., & Benjamin, F. O. (1968). Exploring Pennsylvania: Geography, history, civics (3d ed.). Harcourt, Brace & World.

Chicago Style (17th ed.) Citation

Stevens, Sylvester Kirby, Ralph Waldo Cordier, and Florence O. Benjamin. Exploring Pennsylvania: Geography, History, Civics. 3d ed. New York: Harcourt, Brace & World, 1968.

MLA (9th ed.) Citation

Stevens, Sylvester Kirby, et al. Exploring Pennsylvania: Geography, History, Civics. 3d ed. Harcourt, Brace & World, 1968.