Kathryn Whyman. (1987). Resources today: Plastics. New York: Gloucester Press.
Čikaški stil citiranjaKathryn Whyman. Resources Today: Plastics. New York: Gloucester Press, 1987.
MLA način citiranjaKathryn Whyman. Resources Today: Plastics. New York: Gloucester Press, 1987.
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