Silverthorn, Dee Unglaub, author
Prentice-Hall, 2001
Buku Teks
McCalll, Richard P., author
Johns Hopkins University Press, 2010
Buku Teks
Silverthorn, Dee Unglaub, author
Prentice-Hall, 2001
Buku Teks
Moffett, David F., author
Mosby, 1993
Buku Referensi
Shepard, Robert S., author
Appleton-Century-Crofts, 1985
Buku Teks