Dagostino, Frank R.
Reston Publishing,, 1977
Buku Teks
Ching, Francis D.K., 1943-, author
John Wiley & Sons, 2003
Buku Teks
Martin, C. Leslie, author
Macmillan, 1970
Buku Teks SO
Goodban, William T., author
McGraw-Hill, 1979
Buku Teks
White, Edward T., author
Florida University, [19?-]
Buku Teks