White, Williams S.
Fawcet Publication, 1964.
Buku Teks
NAi Publishers, 2002
Buku Teks
Oom Rohmah Syamsudin, author
1995
UI - Tesis (Membership)
Ben Mboi, author
Gramedia Pustaka Utama, 2011
Buku Teks
Hinchliffe, Arnold P., 1930-, author
Macmillan, 1985
Buku Teks