Dyfyniad APA

Peter, J. P., & Donnelly, J. H. (2008). A preface to marketing management (11th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Peter, J Paul, and James H. Donnelly. A Preface to Marketing Management. 11th ed. Boston: McGraw-Hill, 2008.

Dyfyniad MLA

Peter, J Paul, and James H. Donnelly. A Preface to Marketing Management. 11th ed. McGraw-Hill, 2008.

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