Bender, David L., author
Grennhaven Press, 1981
Buku Teks
Swami Ajarananda, author
Thai Bidhaya Press, [date of publication not identified]
Buku Klasik
Hsu, Francis L.K.
Routledge & Kegan Paul Ltd , 1952.
Buku Teks
Hood, Daniel E., author
Transaction, 2011
Buku Teks
edited by Felicitas Opwis and David Reisman
Brill, 2012
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