Riordan, Jan, author
Mosby, 1983
Buku Teks
Smerdon, Richard, author
Sweet and Maxwel, 2007
Buku Teks
Chambers, Erve, author
Waveland Press, 1989
Buku Teks
Mason, Peter, author
Routledge, 1998
Buku Teks
Michael G. Grantham, editor
Routledge, 2011
Buku Teks