Dyfyniad APA

McMahon, E., & Jamison, W. (1989). Ed McMahon's superselling: Performance techniques for high volume sales. Prentice Hall.

Dyfyniad Arddull Chicago

McMahon, Ed, and Warren Jamison. Ed McMahon's Superselling: Performance Techniques for High Volume Sales. New York: Prentice Hall, 1989.

Dyfyniad MLA

McMahon, Ed, and Warren Jamison. Ed McMahon's Superselling: Performance Techniques for High Volume Sales. Prentice Hall, 1989.

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