APA (7th ed.) Citation

Johnson, R. B. Current Developments in Lens Design and Optical Engineering XXI. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Johnson, R. Barry. Current Developments in Lens Design and Optical Engineering XXI. SPIE Digital Library.

MLA (8th ed.) Citation

Johnson, R. Barry. Current Developments in Lens Design and Optical Engineering XXI. SPIE Digital Library.

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