Mulvihill, Mary Lou, author
Prentice-Hall, 2001
Buku Teks
Mulvihill, Mary Lou, author
Appletton & lange , 1991
Buku Teks
Crowley, Leonard V., 1926-, author
Jones and Bartlett, 2004
Buku Teks
Springer, 2012
eBooks
Burke, Shirley R., author
John Wiley & Sons, 1980
Buku Teks