Sheldon, Sidney, author
Book Club Associates, 1973
Buku Teks
Woolfolk, William
W.H. Allen, 1973
Buku Teks
Truscott, Lucian K.
Collins, 1979
Buku Teks
Moo, Joash
Time Books International, 1993
Buku Teks
Robbins, Harold, 1916-1997
New English Library, 1973
Buku Teks