The John Hopkins University Press, 1995
Buku Teks
Giorgio Brosio, Juan Pablo Jimenez, editors
Edward Elgar, 2012
Buku Teks
St.Martin`s Press, 1971
Buku Teks
The Johns Hopkins University Press, 2004
Buku Teks
edited by Eduardo P. Archetti
MacMillan Education, 1987
Buku Teks