Stanton, W. J., Etzel, M. J., & Walker, B. J. (1991). Fundamentals of marketing (9th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Stanton, William J., Michael J. Etzel, agus Bruce J. Walker. Fundamentals of Marketing. 9th ed. New York: McGraw-Hill, 1991.
Lua MLA (9ú heag.)Stanton, William J., et al. Fundamentals of Marketing. 9th ed. McGraw-Hill, 1991.
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