Dyfyniad APA

Cooper, D. R., & Schindler, P. S. (2006). Marketing research. New York: McGraw-Hill/Irwin.

Dyfyniad Arddull Chicago

Cooper, Donald R., và Pamela S. Schindler. Marketing Research. New York: McGraw-Hill/Irwin, 2006.

Dyfyniad MLA

Cooper, Donald R., và Pamela S. Schindler. Marketing Research. New York: McGraw-Hill/Irwin, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.