Mills, John
EGC, 1993
Buku Teks
Arierta Pujitresnani, author
2015
UI - Tesis (Membership)
Niniek Harsini, author
Universitas Indonesia, 2004
UI - Tesis (Membership)
Artikel Jurnal
Maria Agnes, author
Universitas Indonesia, 2000
UI - Tesis (Membership)