APA-referens (7:e uppl.)

Bhattacharyya, D. K. (2006). Researrch methodology. Excel.

Chicago-referens (17:e uppl.)

Bhattacharyya, Dipak Kumar. Researrch Methodology. New delhi: Excel, 2006.

MLA-referens (9:e uppl.)

Bhattacharyya, Dipak Kumar. Researrch Methodology. Excel, 2006.