New York : Vintage Book, 1969
Buku Teks
Soothill, W.E. (William Edward)
Motilal Banarsidass Publishers Private Limites, 1937
Buku Referensi
Mohamed Yusoff Ismail
Institute of Southeast Asia Studies , 1993
Buku Teks
Yayasan Mahabodhi , 1987
Buku Teks
Okawa, Ryuho
IRH Press Co., 1991
Buku Teks