APA (7th ed.) Citation

Keller, C. U. (2015). Field Guide to Astronomical Instrumentation. SPIE. https://doi.org/10.1117/3.2064991

Chicago Style (17th ed.) Citation

Keller, Christoph U. Field Guide to Astronomical Instrumentation. SPIE, 2015. https://doi.org/10.1117/3.2064991.

MLA (8th ed.) Citation

Keller, Christoph U. Field Guide to Astronomical Instrumentation. SPIE, 2015. https://doi.org/10.1117/3.2064991.

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