APA (7th ed.) Citation

Gregory, G. G. Optics Education and Outreach. SPIE Digital Library.

Chicago Style (17th ed.) Citation

Gregory, G. Groot. Optics Education and Outreach. SPIE Digital Library.

MLA (8th ed.) Citation

Gregory, G. Groot. Optics Education and Outreach. SPIE Digital Library.

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