Lua APA (7ú heag.)

THARP, R. G., & WETZEL, R. J. (1969). Behavior modification in the natural environment. Academic Press.

Lua i Stíl Chicago (17ú heag.)

THARP, Roland G., agus Ralph J. WETZEL. Behavior Modification in the Natural Environment. New York: Academic Press, 1969.

Lua MLA (9ú heag.)

THARP, Roland G., agus Ralph J. WETZEL. Behavior Modification in the Natural Environment. Academic Press, 1969.

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