Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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