Lua APA (7ú heag.)

LEHMANN DONALD R. (2002). ANALYSIS FOR MARKETING PLANNING (5TH.). MCGRAW-HILL.

Lua i Stíl Chicago (17ú heag.)

LEHMANN DONALD R. ANALYSIS FOR MARKETING PLANNING. 5TH. BOSTON: MCGRAW-HILL, 2002.

Lua MLA (9ú heag.)

LEHMANN DONALD R. ANALYSIS FOR MARKETING PLANNING. 5TH. MCGRAW-HILL, 2002.

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