Dyfyniad APA

Green, P. E., & Tull, D. S. (1973). Research for markting decisions (2nd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Green, Paul E., and Donald S. Tull. Research for Markting Decisions. 2nd ed. Prentice Hall, 1973.

Dyfyniad MLA

Green, Paul E., and Donald S. Tull. Research for Markting Decisions. 2nd ed. Prentice Hall, 1973.

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