Plas, Michel van der, author
Anthos Lannoo, 1994
Buku Referensi
Krol, Gerrit, author
Querido, 1997
Buku Teks
Boor, Helmut de, author
CH Beck'sche , 1949-1970
Buku Teks
Goldratt, Elihayu M., author
North River Press, 1992
Buku Teks
Sumardi, author
1989
UI - Skripsi (Membership)