Hays, William L. (William Lee), 1926-1995, author
Holt, Rinehart and Winston, 1971
Buku Teks
edited by Edmund Parker and Marcin Perzanowski
Global Law and Business, 2010
Buku Teks
O`Dowd, Bernard, author
Angust & Robertson, 1963
Buku Teks
Lane, P.H
Buku Teks
Ward, Russel, author
Oxford University Press, 1964
Buku Teks