Jones, Barry
The M E Handbook Series, 1991
Buku Teks
Tiwari, Pooja
Nation Press, 2017
Buku Teks
Eisenmann, Charles
Unesco, 1954
Buku Teks
Kenny, Philip H.
Butterworth, 1994
Buku Teks
edited by Charles J. White and Norman Gross
American Bar Association , 1985
Buku Teks