Polentz, L. M. Engineering fundamentals for professional engineers examinations (3a ed.).
Čikaški stil citiranja (17. izdanje)Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
MLA način citiranja (8. izdanje)Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
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