Soloman, Micah
High-tech, high-touch customer service : inspire timeless loyalty in the demanding new world of social commerce
Amacom, 2012
 Buku Teks SO
Jurewicz, Lynn
High tech, high touch: library customer service through technology
[American Library association, American Library association], 2003
 eBooks
Naisbitt, John
High tech, high touch : pencarian makna di tengah perkembangan pesat teknologi
Mizan, 2001
 Buku Teks SO
Vika Ansy Anggraini
Analisis pengaruh social media marketing activities terhadap customer loyalty (Studi Kasus: Top Five E-commerce Indonesia) = The effect analysis of social media marketing activities on customer loyalty (Case Study: Indonesia's Top Five E-commerce)
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
 UI - Skripsi Membership
The role of exchange in customer loyalty of social network sites
 Artikel Jurnal