APA (7th ed.) Citation

Rugg, E. U., Rugg, H. O., & Schweppe, E. (1922). Social science pamphlets: Essentials in geography--history--civics (Experimental ed.). Harold Rugg.

Chicago Style (17th ed.) Citation

Rugg, Earle Underwood, Harold Ordway Rugg, and Emma Schweppe. Social Science Pamphlets: Essentials in Geography--history--civics. Experimental ed. New York City: Harold Rugg, 1922.

MLA (9th ed.) Citation

Rugg, Earle Underwood, et al. Social Science Pamphlets: Essentials in Geography--history--civics. Experimental ed. Harold Rugg, 1922.