APA (7th ed.) Citation

Hamed, G. M., & unknown. (1993). An expert system for concrete diagnosis.

Chicago Style (17th ed.) Citation

Hamed, Gehad Mohammed, and unknown. An Expert System for Concrete Diagnosis. 1993.

MLA (9th ed.) Citation

Hamed, Gehad Mohammed, and unknown. An Expert System for Concrete Diagnosis. 1993.

Warning: These citations may not always be 100% accurate.