A Fawcett Premier, 1968
Buku Teks
Henry, Nancy, author
Cambridge University Press, 2008
eBooks
Laski, Marghanita, author
Thames & Hudson, 1973
Buku Teks
Pfitzer, Gregory M., author
Northeastern University Press, 1991
Buku Teks
Imron Rosadi
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Tesis (Membership)