APA引文

Elshafei, A. (1968). Product Performance Models PPM. The Institute of National Planning.

Chicago Style (17th ed.) Citation

Elshafei, Alwalid. Product Performance Models PPM. Cairo: The Institute of National Planning, 1968.

MLA引文

Elshafei, Alwalid. Product Performance Models PPM. The Institute of National Planning, 1968.

警告：這些引文格式不一定是100％准確.