Dyfyniad APA
Cooper, D. R., & Schindler, P. S. (2001). Business research methods (7th ed.). Irwin/McGraw-Hill.
Dyfyniad Arddull Chicago
Cooper, Donald R., and Pamela S. Schindler. Business Research Methods. 7th ed. Boston, Mass.: Irwin/McGraw-Hill, 2001.
Dyfyniad MLA
Cooper, Donald R., and Pamela S. Schindler. Business Research Methods. 7th ed. Irwin/McGraw-Hill, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.