Cita APA (7th ed.)

Elgohary, H., & Aziz, A. A. (1968). A Guide for The Programmers & Operators on The IBM 1620. The Institute of National Planning.

Cita Chicago (17th ed.)

Elgohary, H., i Abdalla Abdel Aziz. A Guide for The Programmers & Operators on The IBM 1620. Cairo: The Institute of National Planning, 1968.

Cita MLA (9th ed.)

Elgohary, H., i Abdalla Abdel Aziz. A Guide for The Programmers & Operators on The IBM 1620. The Institute of National Planning, 1968.