Lua APA (7ú heag.)

BOYD H P. (1990). MARKETING RESEARCH: TEXT AND CASES (7TH.). IRWIN MCGRAW-HILL.

Lua i Stíl Chicago (17ú heag.)

BOYD H P. MARKETING RESEARCH: TEXT AND CASES. 7TH. HOMEWOOD: IRWIN MCGRAW-HILL, 1990.

Lua MLA (9ú heag.)

BOYD H P. MARKETING RESEARCH: TEXT AND CASES. 7TH. IRWIN MCGRAW-HILL, 1990.

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