edited by Douglas E. Edlin
Cambridge University Press, 2007
Buku Teks
Hylton, Keith N, Author
Cambridge University Press, 2003
eBooks
Holmes, Oliver Wendell, Jr.
Little, Brown and Company, 1951
Buku Teks
Eisenberg, Melvin A., author
Harvard University Press, 1988
Buku Teks
Vinogradoff, Paul, 1854-1925, author
Oxford University Press, 1970
Buku Teks