Gaya APA
ULRICH, K, T. (2008).
Product Design and Development, Fourth Edition (FOUTH EDITION).
New York:
MCGRAW-HILL/IRWIN.
Gaya MLA
ULRICH, Karl, T..
"Product Design and Development, Fourth Edition".
FOUTH EDITION
New York:
MCGRAW-HILL/IRWIN,
2008.
FAKULTAS TEKNIK.