Serrano, Angelita Ong Camilar Marketing research / Angelita Ong Camilar Serrano - Manila, PH : Unlimited Books Library Services & Publishing Inc., 2016. - x, 288 p. 26 cm. ISBN: 9786214060962 Subjects--Topical Terms: Marketing research. LC Class. No.: HF5415.2 / S47 2016