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Lua i Stíl Chicago (17ú heag.)Society for the Psychological Study of Social Issues agus Claire Selltiz. Research Methods in Social Relations. Rev. [New York]: Holt, 1959.
Lua MLA (9ú heag.)Society for the Psychological Study of Social Issues agus Claire Selltiz. Research Methods in Social Relations. Rev. Holt, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.