Lua APA (7ú heag.)

CROUCH SUNNY. (1996). MARKETING RESEARCH FOR MANAGERS (2ND.). BUTTERWORTH-HEINEMANN.

Lua i Stíl Chicago (17ú heag.)

CROUCH SUNNY. MARKETING RESEARCH FOR MANAGERS. 2ND. OXFORD: BUTTERWORTH-HEINEMANN, 1996.

Lua MLA (9ú heag.)

CROUCH SUNNY. MARKETING RESEARCH FOR MANAGERS. 2ND. BUTTERWORTH-HEINEMANN, 1996.

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