Ivey, P. W., & Horvath, W. (1961). Successful salesmanship: Paul W. Ivey and Walter Horvath (4th ed.). Prentice-Hall.
Chicago-viite (17. p.)Ivey, Paul Wesley, ja Walter Horvath. Successful Salesmanship: Paul W. Ivey and Walter Horvath. 4th ed. Englewood Cliffs, N. J: Prentice-Hall, 1961.
MLA-viite (9. p.)Ivey, Paul Wesley, ja Walter Horvath. Successful Salesmanship: Paul W. Ivey and Walter Horvath. 4th ed. Prentice-Hall, 1961.
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