Pritchett, C. Herman
McGraw-Hill, 1981
Buku Teks SO
Fisher, Louis
McGraw-Hill, 1988
Buku Teks
Schawartz, Bernard
At The University Press, 1955
Buku Teks SO
Strong, Frank R.
Dennis & Co., 1950
Buku Teks SO
Fairman, Charles
Henry Holt and Company, 1948
Buku Teks