Cita APA (7th ed.)

Elshafei, A. (1969). Numerical Control Series: Concepts of NC. The Institute of National Planning.

Cita Chicago (17th ed.)

Elshafei, Alwalid. Numerical Control Series: Concepts of NC. Cairo: The Institute of National Planning, 1969.

Cita MLA (9th ed.)

Elshafei, Alwalid. Numerical Control Series: Concepts of NC. The Institute of National Planning, 1969.