edited by Helmut Gilnzler and Alex Williams
Wiley-VCH, 2001
Buku Referensi
Levin, Lennart, author
Almqvist och Wiksell, 1972
Buku Teks
Fries, Charles Carpenter, author
University of Michigan Press, 1951
Buku Teks
Christopher Titford edited
Gunter Narr, 1985
Buku Teks
edited by Matt Bonass, Michael Rudd
Globe Law and Business, 2010
Buku Teks