Moulton, Harold G., author
University of Chicago Press, 1922
Buku Teks
Bladen, Ashby
McGraw-Hill, 1981
Buku Teks
Dewing, Arthur Stone
The Ronald Press Company, 1953
Buku Teks
Doyle, Leonard A., author
Univesity of California Press, 1965
Buku Teks
Grinblatt, Mark
Irwin/McGraw-Hill, 1998
Buku Teks