Ferguson, Kitty, author
Bantam, 2011
Buku Teks
Dingus, Lowell, author
Carlton, 2012
Buku Referensi
editor, G.R. Castro and M. Cardona
Springer-Verlag Berlin Heidelberg, 1987
Buku Teks
Tahija, Jean
Australia Viking, 1998
Buku Teks
Craffi, Stephen
Image Publishing, 2002
Buku Teks