Strandness, T. Benson
McGraw-Hil, 1964
Buku Teks
Guth, Hans P., author
Prentice-Hall, 1997
Buku Teks
Ferrell, Wilfred A
Holt, Rinehart and Winston, 1978
Buku Teks
St. Martin's Press, 1978
Buku Teks
Jones, Edward Harrell, 1922-, author
Macmillan, 1968
Buku Teks