Kleppner, O. ., Russell, T. ., & Verrill, G. (1986). Otto Kleppner's advertising procedure (9th ed.). Prentice-Hall.
Chicago Style (17th ed.) CitationKleppner, Otto , Thomas Russell, and Glenn Verrill. Otto Kleppner's Advertising Procedure. 9th ed. Englewood Cliffs, NJ: Prentice-Hall, 1986.
MLA (9th ed.) CitationKleppner, Otto , et al. Otto Kleppner's Advertising Procedure. 9th ed. Prentice-Hall, 1986.
Warning: These citations may not always be 100% accurate.