Zwarensteyn, Hendrik, author
Deventer, 1970
Buku Teks
Barlow, Patricia, author
Kluwer Law & Taxation, 1988
Buku Teks
Fugate, Wilbur L., author
Little, Brown, 1982
Buku Teks
Taussig, Frank William, author
Harvard University Press, 1934
Buku Teks
Seward, William W., author
Frederick Fell, 1963
Buku Teks