Gaya APA

Tyler, T, R., Blader, S, L. (2000). Cooperation in groups : procedural justice, social identity, and behavioral engagement . Philadelphia: Psycology Press.

Gaya MLA

Tyler, Tom, R.., Blader, Steven, L.. "Cooperation in groups : procedural justice, social identity, and behavioral engagement". Philadelphia: Psycology Press, 2000. Text.