Gaya APA

ULRICH, K, T., EPPINGER, S, D. (2012). Product design and development, fifth edition (fifth ed.). Singapura: McGraw Hill.

Gaya MLA

ULRICH, Karl, T.., EPPINGER, Steven, D.. "Product design and development, fifth edition". fifth ed. Singapura: McGraw Hill, 2012. Text.