Todd, Stephen, author
Kluwer Law International, 2011
Buku Teks
University of California Press, 1947
Buku Teks
Kolig, Erich, author
Brill, 2010
eBooks
Mulgan, Richard, author
Oxford University Press, 1989
Buku Teks
Sinclair, Keith
Penguin Books, 1986
Buku Teks