Baehr, P. R. (Peter R.), author
Yayasan Obor Indonesia, 1998
Buku Teks
Baehr, P. R. (Peter R.), author
Yayasan Obor Indonesia, 1998
Buku Teks
Yayasan Obor Indonesia, 1993
Buku Teks
Purbadhi Syamsi, author
1993
UI - Tesis (Membership)
Universitas Indonesia, 2005
UI - Skripsi (Membership)