Hollander, Anita Sawyer, author
Irwin /McGraw-Hill, 1996
Buku Teks
Hollander, Anita Sawyer, author
Irwin McGraw-Hill , 2000
Buku Teks
Jones, Graham, author
McGraw-Hill, 1988
Buku Teks
by Jack Gray [and others]
McGraw-Hill, 1964
Buku Teks
Brady, Roger, author
Stanley Thornes, 1992
Buku Teks