Scott, Franklin D.
University of Minnesota Press, 1977
Buku Teks
Patrick, John
Macmillan Publishing Company, 1984
Buku Teks
Ohrtman, Franklin D., author
McGraw-Hill, 2003
Buku Teks
Scott, Ernest
Oxford University Press, 1916
Buku Teks
Scott, Ernest
Oxford University Press, 1920
Buku Teks