by Thomas P. Edmonds [and others]
McGraw-Hill, 1997
Buku Teks
David, Fred R.
Pearson, 2009
Buku Teks
David, Fred R.
Prentice-Hall, 2003
Buku Teks
Wortman, Max Sidones, 1932-, editor
Macmillan, 1969
Buku Teks
Robbins, Stephen P.
Prentice-Hall, 1998
Buku Teks