editor Haryati Soebadio
Archipelago Press, 1998
Buku Teks SO
by Agoes Ariesmunandar, Julian Davison, Bea Bromer and Jacques Durmacay
Archipelago Press, 1998
Buku Referensi
Wojciechowski, Jerzy A.
Council for research in values and philosophy, [Date of publication not identified]
Buku Teks SO
Odum, Eugene Pleasants
Saunders College, 1983
Buku Teks
Pianka, Eric R.
Harper & Row, 1988
Buku Teks