APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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