Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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