Polentz, L. M. Engineering fundamentals for professional engineers examinations (3a ed.).
芝加哥风格引文Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
MLA引文Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
警告：这些引文格式不一定是100％准确.