Principles of marketing / 
Kotler, Philip; Armstrong, Gary; Opresnik, Marc Oliver 
 - 18th ed. 
 - Singapore :  Pearson Education South Asia Pte Ltd,  2021. 
 - 728 p.: ill.; 27.2 cm. 
<br/><br/>Includes appendices, glossary, references, and index 
<br/><br/><label>ISBN: </label>9789813133365 
<br/><br/><label>Dewey Class. No.: </label>C 658.8 K87 2021