Batool, Maria
LAP Lambert Academic Publishing, 2012
Buku Teks
Kastner, Oliver
[Springer, ], 2012
eBooks
Wilkes, Angela
Chicago: A Division of NTC Pub., 1987,
Buku Referensi
Blackstone, Judith
Writers and Readers, 1986
Buku Teks
Hill, G.A.
Ginn, 1889
Buku Teks