De Chavez, Roberto G. Principles of marketing / Roberto G. De Chavez - Mandaluyong City : Books Atbp., Pub. Corp. c2021 - x, 230 pages : Illustrations ; 22 cm. Includes reference. ISBN: 978-621-409-163-8 Subjects--Topical Terms: Marketing. LC Class. No.: FIL HF 5415 .D43 2021 c.4