Kaplan, Howard B., author
Sage Publications, 1984
Buku Teks
edited James E. Teele
F.E. Peacock, 1970
Buku Teks
Kamm, Ernest R
Macmillan, 1981
Buku Teks
Simanjuntak, B., author
Alumni Bandung, 1979
Buku Teks
Cultural and social centre for the Asian and pacific region , 1994
Buku Teks