Bolton, Robert
People skills: how to assert yourself listen to others and resolve conflicts
Prentice-Hall, 1979
 Buku Teks SO
Goulston, Mark
Just listen: discover the secret to getting through to absolutely anyone
American Management Association, 2010
 eBooks
Annisa Yuliharza
Faktor yang mempengaruhi keintiman mahasiswa FISIP UI angkatan 2010 dalam satu jurusan di FISIP UI = Factors that affecting the intimate level of friendship student in one department at FISIP UI
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
 UI - Makalah dan Kertas Kerja
Faber, Joanna
Seni berbicara pada anak: panduan mendidik anak "tanpa ngegas!" = How to talk so little kids will listen: a survival guide to life with children ages 2-7
Bhuana Ilmu Populer, 2020
 Buku Teks SO
Kaplan, Burton
Winning people over : 14 days to power and confidence
Prentice-Hall, 1996
 Buku Teks SO