Caesilia Ika Widanti
Program Peningkatan Kemampuan Komunikasi Anak melalui Pembuatan Buku Harian = Program to Enhance Communication Skills through Journal Keeping
Fakultas Psikologi Universitas Indonesia, 2008
 UI - Tesis Open
Tatum Syarifah Adiningrum
It right : the importance of communication skills to 21st century educational leaders
[Publisher not identified], 2011
 Artikel Jurnal
Management skills : the study of real skills; Vol. 3
edited by W.T. Singleton
MTP Press, 1981
 Buku Teks SO
Practicing Academic Writing Skills
editors, Junaidi, Elda N. Auliansani, Farah S. Azizah, M. Umar Sadikin
UI Publishing, 2020
 Buku Teks
Rogers, Jenny
Coaching skills: a handbook
Open University Press, 2004
 Buku Teks SO