Supriyanto, author
Universitas Indonesia, 1992
UI - Tesis (Membership)
Sobel, Michael I., author
University of Chicago, 1987
Buku Teks
Universitas Indonesia, 2005
UI - Tugas Akhir
Universitas Indonesia, 2005
UI - Tugas Akhir
Mahnke, Frank H.
John Wiley & Sons Inc., 1987
Buku Teks