Gaya APA
ULRICH, K, T., EPPINGER, S, D. (2012).
PRODUCT DESIGN AND DEVELOPMENT FIFTH EDITION .
Singapore:
McGraw Hill.
Gaya MLA
ULRICH, KARL, T.., EPPINGER, STEVEN, D..
"PRODUCT DESIGN AND DEVELOPMENT FIFTH EDITION".
Singapore:
McGraw Hill,
2012.
Text.