Dyfyniad APA

Youssef,Leon A. (1975). System Analysis and Design. Reston Publishings.

Dyfyniad Arddull Chicago

Youssef,Leon A. System Analysis and Design. Reston Publishings, 1975.

Dyfyniad MLA

Youssef,Leon A. System Analysis and Design. Reston Publishings, 1975.

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