Smith, Brenda D.
Longman, 2000
Buku Teks SO
Schwartz, Lynne Sharon
Beacon Press, 1996
Buku Teks SO
American Library Association, 1970
Buku Teks SO
Boog, Jason
NY : A Touchstone Book, Published by Simon & Schuster, 2014
Buku Teks
Tig Thomas, compiler
Miles Kelly, 2008
Buku Teks SO