Kent, Sherman
Appleton Century Croffs, 1967
Buku Teks
Kent, Sherman
Appleton Century Croffs, 1941
Buku Teks
Kraus, Michael
University of Oklahoma Press, 1953
Buku Teks
Thompson, James Westfall
Macmillan, 1958
Buku Teks
edited by Anne Gerritsen, Giorgio Riello
an imprint of Bloomsbury Publishing Plc, 2015
Buku Teks