Hose, Charles, 1863-1929, author
Oxford University Press, 1993
Buku Teks
Spencer, Baldwin, 1860-1929, author
Macmillan, 1899
Buku Teks
Mathis, Ayana, author
Alfred A. Knopf, 2012
Buku Teks
Routledge, 1995
Buku Teks
edited by Lloyd G. Stevenson and Robert P. Multhauf
The John Hopkins University Press , 1968
Buku Teks