edited by Athanassios Raftopoulos, Peter Machamer
Cambridge University Press, 2012
Buku Teks
Laird, John, 1954-, author
Oxford University Press, 1945
Buku Teks
Chisholm, Roderick M., author
Prentice Hall International, 1989
Buku Teks
Bynagle, Hans E.
Libraries Unlimited, 1986
Buku Referensi
Bowie, Andrew, author
Polity, 2013
Buku Teks