McMahon, E., & Jamison, W. (1989). Ed McMahon's superselling: Performance techniques for high volume sales. Prentice Hall.
芝加哥风格引文McMahon, Ed, 与 Warren Jamison. Ed McMahon's Superselling: Performance Techniques for High Volume Sales. New York: Prentice Hall, 1989.
MLA引文McMahon, Ed, 与 Warren Jamison. Ed McMahon's Superselling: Performance Techniques for High Volume Sales. Prentice Hall, 1989.
警告：这些引文格式不一定是100％准确.