Keeton, Joe, author
Hale , 1989
Buku Teks
Heward, James H., author
John Wiley & Sons, 1973
Buku Teks
Graham D. Burrows, Robb O. Stanley, Peter B. Bloom
John Wiley & Sons, 2001
Buku Teks
Rokhlin, L
Foreign Languages Publishing House, [Year of publication not identified]
Buku Teks
Kapur, Vipen, author
Elex Media Komputindo, 2001
Buku Teks