National Learning Corporation, 1991
Buku Teks
Jaleel Ahmad, author
University of Pittsburgh, 1959
Buku Teks
Lyon, John K., author
John Wiley & Sons, 1976
Buku Teks
Beeby, C. E., author
Bharata Karya Aksara, 1984
Buku Teks
Davis, Jack, author
University Press of America, 1981
Buku Teks