Lua APA (7ú heag.)

WALLIMAN NICHOL. (2012). YOUR RESEARCH PROJECT (3rd.). Sage.

Lua i Stíl Chicago (17ú heag.)

WALLIMAN NICHOL. YOUR RESEARCH PROJECT. 3rd. New Dehli: Sage, 2012.

Lua MLA (9ú heag.)

WALLIMAN NICHOL. YOUR RESEARCH PROJECT. 3rd. Sage, 2012.

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