Chang, Richard T., author
University of Florida Press, 1970
Buku Teks
Shteppa, Konstantin F., author
Rutgers University Press, 1962
Buku Teks
edited by D.G.E. Hall
Oxford University Press, 1961
Buku Teks
Gooch, G.P., author
Beacon Press, 1968
Buku Teks
edited by C.H. Philips
Oxford University Press, 1961
Buku Teks