edited by Arend Lijphart
Allyn and Bacon, 1966
Buku Teks
compiled and edited by David K. Marvin
Chandler, 1965
Buku Teks
Kroef, Justus M. van der, author
Masa Baru, 1954
Buku Teks
Kroef, Justus M. van der, author
Masa Baru, 1956
Buku Teks
Hudson, G. F., author
Clarendon Press , 1937
Buku Teks