Ignatius Tarwotjo, author
Universitas Diponegoro , 1990
Buku Teks
Timmreck, Thomas C, author
EGC, 2005
Buku Teks
Umar Fahmi Achmadi, author
Universitas Indonesia. Lembaga Penelitian, 1993
UI - Laporan Penelitian
Budiman Chandra, author
EGC, 1996
Buku Teks
Friedman, Gary D., author
McGraw-Hill, 1980
Buku Teks