Brumfiel, Charles Francis, 1914-
Addison-Wesley, 1962
Buku Teks SO
Cohn, P.M.
John Wiley & Sons, 1979
Buku Teks SO
by Mary P. Dolciani [and others]
Houghton Mifflin, 1976
Buku Teks SO
Saxon, John H.
Prentice-Hall, 1979
Buku Teks SO
chief editor, Walter Ledermann; edtor, Steven Vajda
John Wiley & Sons, 1980
Buku Referensi