Folsom, Ralph Haughwout, author
West Group, 1996
Buku Teks
Folsom, Ralph Haughwout, author
West Publishing, 1992
Buku Teks
Guruswamy, Lakshman D., author
Thomson/West, 2012
Buku Teks
James R. Hines, edited
The University of Chicago Press, 2001
Buku Teks
Postlewaite, Philip F., author
McGraw-Hill, 1980
Buku Teks