Robert, Collins
HarperCollins, 1995
Buku Referensi
Stevens, Alan M.
Ohio University Press, 2004
Buku Referensi
Sutanto Atmosumarto
Atma Stanton, 2004
Buku Referensi
Dev, Ashu Tosh
Jhamapooker Lane, 1950
Buku Referensi
Huang, Shih Fu
Commercial Press, 1949
Buku Referensi