King's Crown Press, 1948
Buku Teks
Schafer, Edward H., author
Time-Life International, 1968
Buku Teks
Spence, Jonathan D.
Litle, Brown and company, 1969
Buku Teks
[Higher Education Press, ],
Multimedia
Roberts, J. A. G. (John Anthony George), 1935-, author
Palgrave Macmillan, 2011
Buku Teks