Bobrow, Davis B.
Free Press, 1979
Buku Teks
Endang Purwaningsih, author
Program Pascasarjana Universitas Indonesia, 2000
UI - Tesis (Membership)
Baramuli, Albertino, author
Yayasan Sumber Agung, 1992
Buku Teks
editor, Allen F. Davis, Harold D. Woodman; penerjemah, Paul Surono Hargosewoyo
Gadjah Mada University Press, 1991
Buku Teks
Mason, Alpheus Thomas,1899-1989, author
Cornel University Press, 1955
Buku Teks