Shaw, Gareth, author
Leicester University Press, 1988
Buku Referensi
Hall, Walter Phelps, author
Ginn and Company, 1953
Buku Teks
Larson, Laurence M., author
Holt , 1926
Buku Teks
Chesterton, G. K. (Gilbert Keith), 1874-1936, author
Chatto , 1951
Buku Teks
edited by Juliana D.M. Lew, Harris Bor, Gregory Fullelove, Joanne Greenaway
Kluwer Law International, 2013
Buku Teks