Kaligis, O.C. (Otto Cornelis), 1942-, author
O.C Kaligis & Associates, 2004
Buku Teks
Darwan Prinst, author
Citra Aditya Bakti, 1993
Buku Teks
Kaligis, O.C. (Otto Cornelis), 1942-, author
O.C. Kaligis & Associates, 2004
Buku Teks
Kaligis, O.C. (Otto Cornelis), 1942-, author
O.C. Kaligis & Associates, 2003
Buku Teks
Harahap, Yani Harlaini, author
Universitas Indonesia, 1988
UI - Skripsi (Membership)