Holden, J. Milnes
Banker and customer
Pitman, 1970
 Buku Teks
Sheth, Jagdish N.
Customer behavior
Thomson, South-Western, 2004
 Buku Teks
Lucas, Robert W.
Customer service
[publisher not identified], [date of publication not identified]
 Buku Teks
Muhammad Dino Putra Nurcahya
Pengaruh Customer Brand Engagement dan Customer Advocacy Terhadap Customer Loyalty = Influence of Customer Brand Engagement and Customer Advocacy, Toward Customer Loyalty
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2023
 UI - Tesis Membership
Fisk, Peter
Customer genius : becoming a customer-centric business
Capstone, 2009
 Buku Teks