Buku Teks
Divine, Robert A., author
New Viewpoints, 1974
Buku Teks
Navarro, Vicente
Ballinger Publ., 1994
Buku Teks
Defti Juniarza, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Tesis (Membership)
Lawrence, Anthony, author
Allen and Unwin , 1972
Buku Teks