edited by Robert M. Merkin ; contributing editor, Judith P. Summer
Sweet & Maxwell, 2010
Buku Referensi
by Akira Takanashi [and others]
The Japan Institut of Labor , 1997
Buku Teks
Woon, Walter C. M., author
Prentice-Hall, 2000
Buku Teks
edited by Ian Brownlie
Clarendon Press, 1989
Buku Referensi
edited by Ian Brownlie
Clarendon Press, 1995
Buku Referensi