Martin Bartels ...[et al.]
Metzner, 1981
Buku Teks
edited by Hilary Lewis Ruttley
[publisher not identified], 1995
Buku Teks
Corman, Calvin W., author
Little,Brown and Company, 1983
Buku Teks
Stephenson, G.
Black Stone Press Limited, 1998
Buku Teks
Stephenson, G.
Blackstone Press limited, 1995
Buku Teks