Roszak, Theodore
Conari Press , 1999
Buku Teks
Tutty Kartawidjaja, author
Universitas Indonesia, 1988
UI - Skripsi (Membership)
Miller, George A. (George Armitage), 1920-2012, author
Harper & Row , 1962
Buku Teks
Carlson, Neil R., author
Allyn and Bacon, [date of publication not identified]
Buku Teks
Carlson, Neil R., author
[publisher not identified], 1997
Buku Teks