Elkins, Arthur, author
Addison-Wesley, 1975
Buku Teks
Saburo, Ienaga, author
Rowman & Littlefield Publishers, Inc., 2001
Buku Teks
Robinson, Michael Edison, author
University Hawaii Press, 2007
Buku Teks
Pollock, George, author
Springer, 2012
eBooks
translated by Arnold J. Toynbee
A Mentor Books, 1957
Buku Teks