Bickhoff, N., Hollensen, S., & Opresnik, M. (2014). The Quintessence of Marketing: What You Really Need to Know to Manage Your Marketing Activities. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Bickhoff, Nils, Svend Hollensen, και Marc Opresnik. The Quintessence of Marketing: What You Really Need to Know to Manage Your Marketing Activities. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2014.
Παραπομπή σε μορφή MLA (8th εκδ.)Bickhoff, Nils, et al. The Quintessence of Marketing: What You Really Need to Know to Manage Your Marketing Activities. Springer Berlin Heidelberg : Imprint: Springer, 2014.
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