Andrew Ashworth, Alison Macdonald, Ben Emmerson
Sweet & Maxwell , 2012
Buku Teks
Tiantian Zheng.
Routledge, 2010
Buku Teks
edited by Ursula Gorham, Natalie Greene Taylor, Paul T. Jaeger
Emerald, 2016
eBooks
Trebach, Arnold S.
Rutgers University Pres, 1964
Buku Teks
Samaha, Joel, author
West Publishing, 1988
Buku Teks