APA-referens (7:e uppl.)

Cooper, D. R. (2001). Business Research Methods (1st edition.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Cooper, D R. Business Research Methods. 1st edition. New York: McGraw-Hill, 2001.

MLA-referens (9:e uppl.)

Cooper, D R. Business Research Methods. 1st edition. McGraw-Hill, 2001.