APA (7th ed.) Citation

Spielberger, C. D., Fox, R., & Masterton, R. B. (1968). Contributions to general psychology: Selected readings for introductory psychology. Ronald Press Co..

Chicago Style (17th ed.) Citation

Spielberger, Charles Donald, Robert Fox, and R. Bruce Masterton. Contributions to General Psychology: Selected Readings for Introductory Psychology. New York: Ronald Press Co., 1968.

MLA (9th ed.) Citation

Spielberger, Charles Donald, et al. Contributions to General Psychology: Selected Readings for Introductory Psychology. Ronald Press Co., 1968.