Churcill, Craig F., author
International Labour Office, 2003
Buku Teks
John Wiley & Sons, 1995
Buku Teks
Waline, Marcel
Recueil Sirey, 1950
Buku Teks
Greesaye, Jean Brethe de la, author
Recueil Sirey, 1947
Buku Klasik
Batiffol, Henri
Dalloz, 1956
Buku Teks