APA-referens

Gupta, A. K. (2011). Research methodology: Methods and techniques (2 edition.).

Chicago-stil citat

Gupta, A K. Research Methodology: Methods and Techniques. 2 edition. Vayu Education of India, Delhi, 2011.

MLA-referens

Gupta, A K. Research Methodology: Methods and Techniques. 2 edition. 2011.