Keller, C. U. (2015). Field Guide to Astronomical Instrumentation. SPIE. https://doi.org/10.1117/3.2064991
Lua i Stíl Chicago (17ú heag.)Keller, Christoph U. Field Guide to Astronomical Instrumentation. SPIE, 2015. https://doi.org/10.1117/3.2064991.
Lua MLA (8ú heag.)Keller, Christoph U. Field Guide to Astronomical Instrumentation. SPIE, 2015. https://doi.org/10.1117/3.2064991.
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