International Labour Office Indian Branch, 1951
Buku Teks
Latiff Sher Mohamed, author
Sweet & Maxwell Asia, 2006
Buku Teks
editorial board, Benjamin Aaron, Thilo Ramm, Tore Sigeman, Jean -Maurice, Werdier
Martinus Nijhoff Publishers, 1992
Buku Referensi
Hadiwardojo
P.P. AKRI Bhayangkara, 1970
Buku Klasik
Bowers, John, 1956-, author
Blackstone Press, 1998
Buku Teks