Zinsser, William, author
A HarperResource Book, 2001
Buku Teks
(hapus1)
McGraw-Hill, 2002
Buku Teks
Rathbone, Robert R., author
Addison-Wesley Publishing Company, 1985
Buku Teks
Raimes, Ann, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Hibbison, Eric, author
Prentice-Hall, 1984
Buku Referensi