Lua APA (7ú heag.)

Trochim, W. M. K. (2003). Research methods (2nd ed.). Biztantra.

Lua i Stíl Chicago (17ú heag.)

Trochim, William M. K. Research Methods. 2nd ed. New Delhi: Biztantra, 2003.

Lua MLA (8ú heag.)

Trochim, William M. K. Research Methods. 2nd ed. Biztantra, 2003.

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