Loomba, Narendra Paul, author
Macmillan, 1978
Buku Teks
Vogel, Arthur I., author
The English Language Book Society, 1960
Buku Teks
Bierman, Harold, author
Richard D. Irwin, 1981
Buku Teks
Bierman, Harold, author
Richard D. Irwin, 1977-1986
Buku Teks
Cramer, Duncan, 1948-, author
Open University Press, 2003
Buku Teks