Blank, Robert H.
Palgrave Macmillan, 2007
Buku Teks
Wilde, Mark
Wolters Kluwer Law & Business, 2013
Buku Teks
Almond, Gabriel A.
Little, Brown & Co., 1978
Buku Teks
Tade Matthias Spranger
Springer, 2012
eBooks
Maddi, Salvatore R.
The Dassey Press, 1968
Buku Teks