Einstein, David
America online for busy people/David Einstein
Berkeley, Calif.: McGraw-Hill, 1996,
 Buku Referensi
Syarifa Nurdina Hidayah
Analisis penerapan service quality melalui online customer service (Studi Kasus: Twitter Indihome) = Analysis of service quality implementation through online customer service (Case Study: Indihome Twitter)
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2020
 UI - Tugas Akhir
Crumlish, Christian
Web publishing with netscape for busy people
McGraw-Hill , 1996
 Buku Teks
Ben-Ze`ev, Aaron
Love online: emotions on the Internet
Cambridge University Press, 2004
 Buku Teks
Grimes, Galen A.
Ten minute guide to the internet and the world wide web
QUE, 1996
 Buku Teks SO