APA (7th ed.) Citation

Hawwa, M., Masoud, A., & unknown. (2020). A nonlinear PID servo controller for computer hard disk drives.

Chicago Style (17th ed.) Citation

Hawwa, M.A, A.A Masoud, and unknown. A Nonlinear PID Servo Controller for Computer Hard Disk Drives. 2020.

MLA (9th ed.) Citation

Hawwa, M.A, et al. A Nonlinear PID Servo Controller for Computer Hard Disk Drives. 2020.