APA (7th ed.) Citation

Williams, C. S. Introduction to the Optical Transfer Function. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Williams, Charles S. Introduction to the Optical Transfer Function. SPIE Digital Library.

MLA (9th ed.) Citation

Williams, Charles S. Introduction to the Optical Transfer Function. SPIE Digital Library.

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