एपीए उद्धरण

Beck, R. D. (1980). Plastic product design. Van Nostrand Reinhold.

शिकागो स्टाइल उद्धरण

Beck, Ronald D. Plastic Product Design. N.York: Van Nostrand Reinhold, 1980.

एमएलए उद्धरण

Beck, Ronald D. Plastic Product Design. Van Nostrand Reinhold, 1980.