Gaya APA
Gottfried, B, S. (2007).
Spreadsheet Tools For Engineers Using Excel / Byron S Gottfried (Cet.3).
New York:
Mc Graw Hill.
Gaya MLA
Gottfried, Byron, S.
"Spreadsheet Tools For Engineers Using Excel / Byron S Gottfried".
Cet.3
New York:
Mc Graw Hill,
2007.
Buku.