McFarland, Mary Brambilla, author
Delmar Publishing, 1992
Buku Teks
Kee, Joyce LeFever, author
Prentice-Hall, 2002
Buku Teks
Lamb, Jane Onstad, author
Brady, 1984
Buku Teks
Corbett, Jane Vincent, author
Appleton & Lange, 1992
Buku Teks
Kee, Joyce LeFever, author
Pearson Prentice-Hall, 2005
Buku Teks