Dallin, David J.
Yale University Press, 1949
Buku Teks
Lensen, George Alexander, author
Sophia University, 1970
Buku Teks
Vishwanathan, Savitri, author
Diplomatic Press, 1973
Buku Teks
Boyle, Peter G., author
Routledge, 1993
Buku Teks
Singh, Bilveer, 1956-, author
Gadjah Mada University Press , 1994
Buku Teks