A Norman Jeffares, Martin Gray, editor
HarperCollinPublisher, 1995
Buku Referensi
Cohen, J.M. (John Michael), 1903-1989, author
Penguin Books, 1971
Buku Referensi
Cohen, J.M. (John Michael), 1903-1989, author
Allen Lane, 1980
Buku Referensi
International Publ., 1970
Buku Teks
The Democratic Action Party, 1969
Buku Teks