APA (7th ed.) Citation

Smith, A. M. (2008). Alhacen's approach to "Alhazen's Problem".

Chicago Style (17th ed.) Citation

Smith, A. Mark. Alhacen's Approach to "Alhazen's Problem". 2008.

MLA (9th ed.) Citation

Smith, A. Mark. Alhacen's Approach to "Alhazen's Problem". 2008.

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