Elonka, Stephen Michael, author
McGraw-Hill, 1981
Buku Referensi
Kettell, Brian, author
Wiley, 2010
Buku Teks
Runciman, Lex, author
Allyn and Bacon, 1999
Buku Teks
Artikel Jurnal
Ching, Hai Wu Shang Shih, author
The Supreme Master Ching Hai , 1993
Buku Teks