Andi Anindya Dwi P.L., author
Universitas Indonesia, 2012
UI - Skripsi (Open)
William, Martin, author
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Maio, Gregory R., author
SAGE Publications, 2019
Buku Teks
Insko, Chester A.
Prentice Hall Inc., 1967
Buku Teks
Umar Dhyana, author
1997
UI - Tesis (Membership)