Dyfyniad APA
Cooper, D. R., & Schindler, P. S. (2003). Business research methods (8th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Cooper, Donald R., and Pamela S. Schindler. Business Research Methods. 8th ed. New Delhi: McGraw-Hill, 2003.
Dyfyniad MLA
Cooper, Donald R., and Pamela S. Schindler. Business Research Methods. 8th ed. McGraw-Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.