Crawford R J. Plastic engineering (3rd.). BH.
Chicago Style (17. basım) AtıfCrawford R J. Plastic Engineering. 3rd. Oxford: BH.
MLA (9th ed.) AtıfCrawford R J. Plastic Engineering. 3rd. BH.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
Crawford R J. Plastic engineering (3rd.). BH.
Chicago Style (17. basım) AtıfCrawford R J. Plastic Engineering. 3rd. Oxford: BH.
MLA (9th ed.) AtıfCrawford R J. Plastic Engineering. 3rd. BH.