Brooks, W. Collin, author
P.S. King & Son, 1939
Buku Teks
Eckstein, Otto, author
Prentice-Hall, 1967
Buku Teks
Aronson, J. Richard, author
McGraw-Hill , 1985
Buku Teks
Lutz, Harley Leist, author
D. Appleton-Century, 1947
Buku Teks
Rosen, Harvey S., author
Richard D. Irwin, 1989
Buku Teks