Хоёрдогч өгөгдлийн судалгаа✔Philip Kotler, Kevin Keller “Marketing Managment” 14th edition✔Del.I Hawkins, David L. Mothersbaugh “Consumer behavior” 13th edition✔John Egan “Relationship Marketing: Exploring Relational Strategies in Marketing” 4th Edition✔Abdullah Hersh “ The Impact of Customer Relationship Marketing on Customer Satisfaction of the Arab Bank Services”✔Brian R. Kinard, Michael Capella “Relationship marketing: The influence of consumer involvement on perceived service benefits”