translated and edited by R.C. Zaehner
J.M. Dent & Sons, 1966
Buku Teks
Pringle, Robert, 1936-, author
Allen & Unwin, 2004
Buku Teks
Bambang Budi Utomo, author
Kharisma Ilmu, 2012
Buku Referensi
Agus Aris Munandar, author
Fakultas Ilmu Pengatahuan Budaya Universitas Indonesia, 1995
UI - Laporan Penelitian
Bernard, Theos
Philosopical Library , 1947
Buku Teks