Kelley, D. S. (2001). Pro/engineer instructor. Boston: McGraw Hill.
Trích dẫn kiểu ChicagoKelley, David S. Pro/engineer Instructor. Boston: McGraw Hill, 2001.
MLA引文Kelley, David S. Pro/engineer Instructor. Boston: McGraw Hill, 2001.
警告：這些引文格式不一定是100％准確.