Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

Donald R. Cooper, và Donald R. Cooper; 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.