Lua APA (7ú heag.)

WEILBACHER WILLIAM M. (1975). MARKETING MANAGEMENT CASES (2ND.). MACMILLAN.

Lua i Stíl Chicago (17ú heag.)

WEILBACHER WILLIAM M. MARKETING MANAGEMENT CASES. 2ND. NEW YORK: MACMILLAN, 1975.

Lua MLA (9ú heag.)

WEILBACHER WILLIAM M. MARKETING MANAGEMENT CASES. 2ND. MACMILLAN, 1975.

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