Camilar-Serrano, Angelita Ong Professional salesmanship / Angelita Ong Camilar-Serrano - Intramuros, Manila : Unlimited Books Library Services & Publishing Inc., 2023. ISBN: 9786214271566 Subjects--Topical Terms: Sales personnelSalesmen and salesmanship LC Class. No.: HF 5438 / C36 2023