Lua APA (7ú heag.)

Ries, A., & Trout, J. (1989). Bottom-up marketing. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Ries, Al, agus Jack Trout. Bottom-up Marketing. New York: McGraw-Hill, 1989.

Lua MLA (9ú heag.)

Ries, Al, agus Jack Trout. Bottom-up Marketing. McGraw-Hill, 1989.

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