APA-referens

Cooper, D. R. S. (2006). Business research methods (9 edition.).

Chicago-stil citat

Cooper, Donald R; Schindler. Business Research Methods. 9 edition. Tata Mc Graw Hill: New Delhi, 2006.

MLA-referens

Cooper, Donald R; Schindler. Business Research Methods. 9 edition. 2006.