Gould, William B., IV
A primer on American labor law
MIT Press, 1982
 Buku Teks
Reuschlein, Harold Gill
The law of agency and partnership
St. Paul Minn, 1990
 Buku Teks
Verhagen, H.L.E.
Agency in private international law : the hague convention on the law applicable to agency
Martinus Nijhoff, 1995
 Buku Teks
Anson, William R., Sir
Principles of the law of contract : with a chapter on the law of agency
Oxford University Press, 1930
 Buku Teks
Nemeth, Charles P.
Law and evidence : a primer for criminal justice criminology law and legal studies
Jones and Bartlett, 2011
 Buku Teks