Forsyth, D. R. (2019). Group dynamics (Seventh edition.). Cengage.
Lua i Stíl Chicago (17ú heag.)Forsyth, Donelson R. Group Dynamics. Seventh edition. Boston, MA, USA: Cengage, 2019.
Lua MLA (9ú heag.)Forsyth, Donelson R. Group Dynamics. Seventh edition. Cengage, 2019.
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