Folsom, Ralph Haughwout
International business transactions in a nutshell
West Group, 1996
 Buku Teks SO
Folsom, Ralph Haughwout
International business transactions in a nutshell
West Publishing, 1992
 Buku Teks SO
Folsom, Ralph Haughwout
International business transactions in a nutshell
West Publishing, 1992
 Buku Teks SO
International trade for the nonspecialist. volume I - II / Editor, Paul H. Vishny
American Law Institute, 1992
 Buku Teks
Stephan, Paul B.
International business and economics: law and policy
Charlottesville, 1996
 Buku Teks