Tambiah, S.J.
Cambridge University Press, 1976
Buku Teks
Chang, Garma C.C.
The Pennsylvania State University Press, 1971
Buku Teks
Terwiel, Barend jan
Nias Press, 2012
Buku Teks
Conze, Edward, 1904-1979
Harper Brothers Publisher, 1959
Buku Teks
Bukkyo Dendo Kyokai
Kosaido, 1979
Buku Teks