APA (7th ed.) Citation

Khan, M. A., & unknown. (2001). An efficient font design method.

Chicago Style (17th ed.) Citation

Khan, Murtaza Ali, and unknown. An Efficient Font Design Method. 2001.

MLA (9th ed.) Citation

Khan, Murtaza Ali, and unknown. An Efficient Font Design Method. 2001.

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