edited by Shayne Cox Gad
John Wiley & Sons, 2005
eBooks
Richard F. Venn, editor
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Deglin, Judith Hopfer, 1950-, author
F.A. Davis , 2005
Buku Referensi
Hodgson, Barbara B., author
Elsevier , 2005
Buku Referensi
Van Nostrand Reinhod, 1975
Buku Teks