Forer, Lois G.
Norton, 1984
Buku Teks
edited by Phaedon John Kozyris
Kluwer Law International, 2007
Buku Teks
Fry, Earl H.
McGraw-Hill, 1980
Buku Teks
Colombo, Ronald J.
Oxford University Press, 2015
Buku Teks
Shiffrin, Steven H.
West, 2011
Buku Teks