MCGOWN K L. (1979). MARKETING RESEARCH TEXT AND CASES. WINTHROP PUBLISHERS.
Lua i Stíl Chicago (17ú heag.)MCGOWN K L. MARKETING RESEARCH TEXT AND CASES. CAMBRIDGE: WINTHROP PUBLISHERS, 1979.
Lua MLA (9ú heag.)MCGOWN K L. MARKETING RESEARCH TEXT AND CASES. WINTHROP PUBLISHERS, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.