Academic Press, 2015
eBooks
Grampp, William D.
Richard D. Irwin , 1953
Buku Teks
Taufan Dwi Putra, author
2007
UI - Tesis (Membership)
Westview Press, 1997
Buku Teks
edited by Alex E. Fernandez Jilberto and Barbara Hogenboom
Routledge, 2007
Buku Teks