Muller, Herbert J.
Harper & Row, 1963
Buku Teks
Kadt, J. de
G.A. Van Oorschot, 1946
Buku Klasik
Oever, Karel van den
J.J. Romen & Zonen, [Date of publication not identified]
Buku Teks
Nemo, Philippe
Duquesne University Press, 2006
Buku Teks
Toynbee, Arnold J.
Meridian Books, 1958
Buku Teks