Herman, Amos
Kluwer Law and Taxation Pub., 1983
Buku Teks
Dunn, Frederick Sherwood, author
Johns Hopkins Press, 1929
Buku Teks
Wallwork, Adrian, author
Springer, 2010
Buku Teks
Seekings, David, author
Crest publishing, 1999
Buku Referensi
Humpreys, A.R., author
Grove Press, 1962
Buku Teks