Singh, Y. K., & Bajpai, R. B. (2012). Research Methodology: Data Presentation. APH Publishing Corporation.
Cita Chicago (17th ed.)Singh, Y. K., i R. B. Bajpai. Research Methodology: Data Presentation. New Delhi: APH Publishing Corporation, 2012.
Cita MLA (9th ed.)Singh, Y. K., i R. B. Bajpai. Research Methodology: Data Presentation. APH Publishing Corporation, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.