Chandos , 2013
eBooks
Weingand, Darlene E., author
[American Library association, ], 2001
eBooks
Edited by Pat Woodrum
The Haworth Press, 1989
Buku Teks
Langley, Anne, author
Chandos Publishing, 2006
Buku Teks
Viswanathan, C.G.
Print House, 1985
Buku Referensi