Windelband, Wilhelm, author
Dover, 1956
Buku Teks
Rickard, J.A., author
Barnes & Noble, 1952
Buku Teks
Gomperz, Theodor, author
John Murray, 1949
Buku Teks
Gomperz, Theodor, author
John Murray , 1955
Buku Teks
Blainey, Geoffrey, 1930-, author
Sun Books, 1978.
Buku Teks