Kegley, Charles W. (Charles William), Jr., author
St. Martin's Press, 1995
Buku Teks
Kegley, Charles W. (Charles William), Jr., author
St. Martin's Press , 1995
Buku Teks
Schmid, J.J. von, author
De Erven F Bohn N.V., 1948
Buku Teks
Purcell, Edward A., author
The University Press, 1973
Buku Teks
Jong, Jaap de
SDU Uitgeverij Koninginnegracht, 1991
Buku Teks