Posner, Richard A., author
Harvard University Press, 2008
Buku Teks
Smith, Daniel, author
Michael O'Mara Books Limited, 2021
Buku Teks
Smith, Daniel, author
Michael O'Mara Books Limited, 2015
Buku Teks
McGraw-Hill, [date of publication not identified]
Buku Teks
Morgan, Mary S., 1952-2011, author
Cambridge University Press, 2012
Buku Teks