Sumitro Joyohadikusumo
Institute for Economic and Social Research, Education, and Information, 1977
Buku Teks
Norman, Colin
Norton, 1981
Buku Teks
Lowrance, William W.
Oxford University Press, 1985
Buku Teks
Ladrière, Jean.
UNESCO, 1977
Buku Teks
Capra, Fritjof
Flamingo, 1982
Buku Teks