1.
|
New York : Berkley Pub. Group, c2004.
|
2.
|
Cambridge ; New York : Cambridge University Press, c2003.
|
3.
|
Silver Spring, Md. : T.J. Publishers, c1994.
|
4.
|
Washington, D.C. : Kendall Green Publications, 1986.
|
5.
|
New York : Four Winds Press ; Toronto : Collier Macmillan Canada ; New York : Maxwell Macmillan International, c1991.
|
6.
|
Washington, DC : Kendall Green Publications, c1994.
|