Kotler, Philip Principles of marketing / Philip T Kotler; Gary Armstrong with Marc Oliver Opresnik. - Eighteenth edition, Global edition. - Harlow, England : Pearson, 2021 - 728 pages : color illustrations ; 28 cm. ISBN: 9781292341132 LC Class. No.: HF5415 / K87 2021 Dewey Class. No.: 658.8 / KOT 2021