Spanogle, John A.
International sales law a problem oriented coursebook
St. Paul Minn, 2000
 Buku Teks
Folsom, Ralph Haughwout
International business transactions a problem oriented coursebook
West Group, 1999
 Buku Teks
Guruswamy, Laskshman
Supplement of basic documents to international law and world order: a problem-oriented coursebook
[Publisher not identified], 1994
 Buku Teks
Lin, Forest
The DOS coursebook
Scott/Jones, 1991
 Buku Teks
Kennedy, Robert, 1974-
Phonology : a coursebook
Cambridge University Press, 2017
 Buku Teks