Nash, Gary B., author
Harvard University Press, 1979
Buku Teks
Miller, John C.
Stanford University Press, 1965
Buku Teks
Moniz, Amanda B., author
Oxford University Press, 2016
eBooks
Fukuyama, Francis, author
Farrar, Straus and Giruox, 2012
Buku Teks
Lewis-Williams, David, author
Thames & Hudson, 2002
Buku Teks