Folsom, Ralph Haughwout, author
West Group, 2011
Buku Teks
Hahn, Elliott J., author
Quorum Books, 1984
Buku Teks
Hauser, Rita E.
Oceana Publication , 1960
Buku Teks
Bogaert, Geert
Graham & Trotman/M. Nijhoff, 1993
Buku Teks
edited by, Andrzej Jakubowski, Kristin Hausler, Francesca Fiorentini
Brill Nijhoff, 2019
Buku Teks