Dyfyniad APA

Wrenn, B. (1988). Instructor's manual: marketing management: Analysis, planning, implementation, and control (6th ed.). Prentice-Hall.

Dyfyniad Arddull Chicago

Wrenn, Bruce. Instructor's Manual: Marketing Management: Analysis, Planning, Implementation, and Control. 6th ed. Englewood Cliffs, N.J: Prentice-Hall, 1988.

Dyfyniad MLA

Wrenn, Bruce. Instructor's Manual: Marketing Management: Analysis, Planning, Implementation, and Control. 6th ed. Prentice-Hall, 1988.

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