King, Peter N., author
Gajah Mada University Press, 1997
Buku Teks
Artikel Jurnal
An`amta Djamhari, author
Program Pascasarjana Universitas Indonesia, 1994
UI - Tesis (Membership)
Schwab, Glenn Orville, 1919-, author
John Wiley & Sons, 1996
Buku Teks
Sidabutar, Noni Valeria, author
Program Pascasarjana Universitas Indonesia, 2016
UI - Tesis (Membership)