edited by Michael E. Soule
Cambridge University Press, 1987
Buku Teks
Sri Murni Soenarno, author
Program Pascasarjana Universitas Indonesia, 1990
UI - Tesis (Membership)
Meffe, Gary K.
Sinauer Associates, 1997
Buku Teks
Evans, David, author
Routledge, 1997
Buku Teks
edited by James G. Else and Phyllis C. Lee
Cambridge University Press, 1986
Buku Teks