Tony, P. (2025). Essentials of Marketing Research ( 4th Edition ). British Library Cataloguing-in-Publication Data.
Chicago-tyylinen lähdeviittausTony, Proctor. Essentials of Marketing Research ( 4th Edition ). British Library Cataloguing-in-Publication Data, 2025.
MLA-viiteTony, Proctor. Essentials of Marketing Research ( 4th Edition ). British Library Cataloguing-in-Publication Data, 2025.
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