Bube, Richard H., author
Academic Press, 1981
Buku Teks
Kittel, Charles, author
John Wiley & Sons, 1986
Buku Teks
Academic Press, 1984
Buku Teks
Verma, Ajit Ram
Wiley Eastren, 1982
Buku Teks
Elliott, Roger J., author
English Language Book Society, 1978
Buku Teks