Sheingold, Abraham, author
D. Van Nostrand, 1951
Buku Teks
Jurriens, Edwin, author
2003
Artikel Jurnal
Stania Puspawardhani, author
Program Pascasarjana Universitas Indonesia, 2007
UI - Tesis (Membership)
Morissan, M.A., author
Raminda Prakarsa, 2005
Buku Teks
Cazeneuve, Par Jean
Presses Universitaires de France, 1963
Buku Teks