Breet
Butterworth, 1989
Buku Teks
Loewy, Arnold H.
St.paul Minn, 1987
Buku Teks
Fletcher, George P., author
Oxford University Press, 2000
Buku Teks
Glazebrook, P.R., author
Blackstones Press Ltd., 2000
Buku Teks
compiled and edited by M.Cherif Bassiouni and Ved P. Nanda
Charles C. Thomas, 1973
Buku Teks