Iovine, julie
Chronicle Books, 2002
Buku Teks
Kopec, David Alan
Fairchild Books, 2012
Buku Teks
Augustin, Sally
John & Sons, Inc, 2009
Buku Teks
Cambridge University Press , 1994
Buku Teks
Graves, Robert
New York Jonathan Cape & Harrison Smith 1930
Buku Teks