University of Souther California Press, 1980
Buku Teks SO
Andrew Ashworth, Alison Macdonald, Ben Emmerson
Sweet & Maxwell , 2012
Buku Teks
edited by Richard P. Claude
John Hopkins University Press, 1976
Buku Teks SO
Ingram, Jefferson L.
Pearson/Prentice Hall, 2005
Buku Teks SO
Carías, Allan-Randolph Brewer
Cambridge University Press, 2009
eBooks