Lua APA (7ú heag.)

Andres, L. (2012). Designing & doing survey research. SAGE.

Lua i Stíl Chicago (17ú heag.)

Andres, Lesley. Designing & Doing Survey Research. London: SAGE, 2012.

Lua MLA (9ú heag.)

Andres, Lesley. Designing & Doing Survey Research. SAGE, 2012.

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