Lua APA (7ú heag.)

Napier, R. W. (1981). Groups: Theory and experience (2nd ed.). Houghton Mifflin.

Lua i Stíl Chicago (17ú heag.)

Napier, Rodney W. Groups: Theory and Experience. 2nd ed. Boston: Houghton Mifflin, 1981.

Lua MLA (9ú heag.)

Napier, Rodney W. Groups: Theory and Experience. 2nd ed. Houghton Mifflin, 1981.

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