0, 1987
Buku Teks
Amerasinghe, Chittharanjan Felix, 1933-, author
Clarendon Press, 1988
Buku Teks
Eisenberg, Melvin A., author
Harvard University Press, 1988
Buku Teks
Vinogradoff, Paul, 1854-1925, author
Oxford University Press, 1970
Buku Teks
Vinogradoff, Paul, 1854-1925, author
Oxford University Press, 1959
Buku Teks