Rowse, A.L.
Macmillan, 1950
Buku Teks
Tymieniecka, Anna-Teresa, author
Springer, 2012
eBooks
edited by Keith Wingrove
University of Queenland Press, 1990
Buku Teks
Watts, Alan W., author
John Murray , 1948
Buku Teks
Clifford, James, 1945-, author
Harvard University Press, 1988
Buku Teks