edited by Juliana D.M. Lew, Harris Bor, Gregory Fullelove, Joanne Greenaway
Kluwer Law International, 2013
Buku Teks
Rose, Richard, 1933-
Scott, Foreman, 1989
Buku Teks
edited by Kees van Dijk, Huub de Jonge and Elly Touwen-Bouwsma
KITLV Press, 1995
Buku Teks
MacIver, Robert M.
Atherton Press, 1969
Buku Teks
Sales, Rosemary
Routledge, 1997
Buku Teks SO