APA (7th ed.) Citation

Siegel, E., Baird, M., & Reiss, E. (1982). Goodbye profit system, update (2nd ed.). Definition Press.

Chicago Style (17th ed.) Citation

Siegel, Eli, Martha Baird, and Ellen Reiss. Goodbye Profit System, Update. 2nd ed. New York: Definition Press, 1982.

MLA (9th ed.) Citation

Siegel, Eli, et al. Goodbye Profit System, Update. 2nd ed. Definition Press, 1982.