Lua APA (7ú heag.)

Chawla, D., & Sondhi, N. S. (2011). Research Methodology: Concept and Cases (2nd.). Vikas Publishing House Private Limited.

Lua i Stíl Chicago (17ú heag.)

Chawla, Deepak, agus Neena Sondhi Sondhi. Research Methodology: Concept and Cases. 2nd. Noida: Vikas Publishing House Private Limited, 2011.

Lua MLA (9ú heag.)

Chawla, Deepak, agus Neena Sondhi Sondhi. Research Methodology: Concept and Cases. 2nd. Vikas Publishing House Private Limited, 2011.

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