Armstrong, G., Kotler, P., & Opresnik, M. O. (2017). Marketing: An introduction (Thirteenth edition.). England: Pearson.
Chicago Style CitationArmstrong, Gary,, Philip Kotler, and Marc O. Opresnik. Marketing: An Introduction. Thirteenth edition. England: Pearson, 2017.
MLA CitationArmstrong, Gary,, Philip Kotler, and Marc O. Opresnik. Marketing: An Introduction. Thirteenth edition. England: Pearson, 2017.
Warning: These citations may not always be 100% accurate.