Cita APA (7th ed.)

Marwell, G., & Schmitt, D. R. (1975). Cooperation: An experimental analysis. Academic Press.

Cita Chicago (17th ed.)

Marwell, Gerald, i David R. Schmitt. Cooperation: An Experimental Analysis. New York: Academic Press, 1975.

Cita MLA (9th ed.)

Marwell, Gerald, i David R. Schmitt. Cooperation: An Experimental Analysis. Academic Press, 1975.