Beard, Charles A., author
New Home Library, 1944
Buku Teks
Lippincott, Isaac, author
Appleton Century Croffs, 1933
Buku Teks
Stuart, Graham H. (Graham Henry), 1887-, author
Appleton-Century-Crofts, 1955
Buku Teks
introduction by Edward G. Smith
Barnes & Noble, 1966
Buku Teks
McLaughlin, Andrew C., author
Appleton Century Crofts, 1935
Buku Teks