Hoffman, Ross J.S., author
Littlefield, Adams, 1958
Buku Teks
London : Chatto & Windus
Majalah, Jurnal, Buletin
Ilana Tan, author
Gramedia Pustaka Utama, 2010
Buku Teks
Pease, Martha Redding, author
Fourth Estate, 1984
Buku Referensi
Crosbie, Michael J., author
Rockport Publishers, 1998
Buku Teks