Whitehead, Alfred North, 1861-1947, author
The Free Press , 1968
Buku Teks
Crusius, Timothy W., author
McGraw-Hill, 2002
Buku Teks
Petrie, W.M. Flinders, author
Cambridge University Press, 2014
eBooks
Murray, John Edward, author
Michie, 1990
Buku Teks
Pergamon Press, 1979
Buku Teks