Lua APA (7ú heag.)

KOTLER PHILIP. (1999). PRINCIPLES OF MARKETING (2ND.). PRENTICE -HALL INTERNATIONAL, INC.

Lua i Stíl Chicago (17ú heag.)

KOTLER PHILIP. PRINCIPLES OF MARKETING. 2ND. LONDNN: PRENTICE -HALL INTERNATIONAL, INC, 1999.

Lua MLA (9ú heag.)

KOTLER PHILIP. PRINCIPLES OF MARKETING. 2ND. PRENTICE -HALL INTERNATIONAL, INC, 1999.

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