Lord, Harold W., author
McGraw-Hill, 1980
Buku Teks
Duerden, C.
Philosophical Library, 1970
Buku Teks
Sundari Kustomo, author
Universitas Indonesia, 1994
UI - Tesis (Membership)
Erlangga, 1999
Buku Teks
Afriman Djafri, author
Universitas Indonesia, 2010
UI - Tesis (Open)