Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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

Attention : ces citations peuvent ne pas être correctes à 100%.