Bullard, Reader
Oxford university Press, 1958
Buku Teks
edited by Peter Mansfield
Oxford University Press, 1973]
Buku Teks
edited by Sydney Nettleton Fisher
Cornell University Press , 1955
Buku Teks
edited by Hussein Hassan Soliman
Routledge, 2013
Buku Teks
Royal Institute of International Affairs, 1954
Buku Teks