Dobby, E.H.G. (Ernest Henry George), 1906-1981, author
University of London Press, 1967
Buku Teks
Kantner, John F.
Lixington Books, 1975
Buku Teks
Institute of sontheast Asian's Studies, 2000
Buku Teks
Purcell, Victor, 1896-1965, author
Oxford University Press, 1951
Buku Teks
Steinberg, David J. (David Joel), author
Oxford University Press, 1971
Buku Teks