Levin, David Michael, author
University of California Press, 1999
Buku Teks
Scruton, Roger
Pantja SImpati , 1986
Buku Teks
Russell, Bertrand, 1872-1970, author
George Allen & Unwin LTD, 1959
Buku Teks
Lourenco, Eduardo, author
Gradiva, 2006
Buku Referensi
Lourenco, Eduardo, author
Gradiva, 2005
Buku Referensi