Netzley, Michael, author
Prentice-Hall, 2001
Buku Teks
Zinsser, William, author
A HarperResource Book, 2001
Buku Teks
Zinsser, William, author
Harper Collins, 1990
Buku Teks
Oxford University Press , 1976
Koleksi Publik
Holladay, Sylvia A., author
Prentice-Hall, 1981
Buku Teks