Lua APA (7ú heag.)

Singh, Y., & Bajpai, R. B. (2008). Research methodology. APH Pub..

Lua i Stíl Chicago (17ú heag.)

Singh, Y.K, agus R. B. Bajpai. Research Methodology. New Delhi: APH Pub., 2008.

Lua MLA (8ú heag.)

Singh, Y.K, agus R. B. Bajpai. Research Methodology. APH Pub., 2008.

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