Dickinson, Peter Somers, author
W.S. Hein, 1989
Buku Teks
edited by Efstathios K. Banakas
Kluwer Law International, 1996
Buku Teks
ILO, 1976
Buku Teks
Goswami, Ambarish, editor
McGraw-Hill, 2012
Buku Teks
Kapian, Jeffrey M, author
Thomson, 2006
Buku Teks