APA (7th ed.) Citation

Suhail, M. A., & unknown. (1997). Direct load control using programmable logic controller.

Chicago Style (17th ed.) Citation

Suhail, Mohammed Abdallah., and unknown. Direct Load Control Using Programmable Logic Controller. 1997.

MLA (9th ed.) Citation

Suhail, Mohammed Abdallah., and unknown. Direct Load Control Using Programmable Logic Controller. 1997.

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