James, Preston E., author
John Wiley & Sons, 1981
Buku Teks
G & C. Merriam Co., 1949
Buku Referensi
May, Jacques M.
MD Publications, 1958
Buku Teks
Brown, Tim, author
Wiley Blackwell, 2010
Buku Teks
Universitas Indonesia, 2002
UI - Tesis (Membership)