Wilhide, Elizabeth, author
Tabori & Chang, 1998
Buku Teks
Niesewand, Nonie, author
Mitchell Beazley, 1995
Buku Referensi
Storey, Sally, author
Quadrille Publishing Limited, 2000
Buku Referensi
Steffy, Gary R., author
Van Nostrand Reinhold, 1990
Buku Teks
Szenasy, Susan S., author
Running Press, 1986
Buku Referensi