Kleppner, O., Russell, T., & Verrill, G. (1986). Advertising procedure (9th ed.). Prentice Hall.
Chicago Style (17th ed.) ZitazioaKleppner, Otto, Thomas Russell, eta Glenn Verrill. Advertising Procedure. 9th ed. Englewood: Prentice Hall, 1986.
MLA (9th ed.) ZitazioaKleppner, Otto, et al. Advertising Procedure. 9th ed. Prentice Hall, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.