Leggitt, Jim
John Wiley & Sons, 2002.
Buku Teks
Brookes, Arthur
Cambridge University Press, 1990
Buku Teks
Artikel Jurnal
Moh. Arief Djanin, author
1990
UI - Disertasi (Membership)
Edwin Soedarmo, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2008
UI - Tesis Open