Greyser, S. A., & Kopp, R. J. (1992). Cases in advertising and communications management (3rd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Greyser, Stephen A., agus Robert J. Kopp. Cases in Advertising and Communications Management. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1992.
Lua MLA (9ú heag.)Greyser, Stephen A., agus Robert J. Kopp. Cases in Advertising and Communications Management. 3rd ed. Prentice-Hall, 1992.
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