APA (7th ed.) Citation

International Astronomical Union & Cayrel, R. (1980). Guide lines for minimizing urban sky glow near astronomical observatories. International Astronomical Union.

Chicago Style (17th ed.) Citation

International Astronomical Union and R. Cayrel. Guide Lines for Minimizing Urban Sky Glow Near Astronomical Observatories. [Paris]: International Astronomical Union, 1980.

MLA (8th ed.) Citation

International Astronomical Union and R. Cayrel. Guide Lines for Minimizing Urban Sky Glow Near Astronomical Observatories. International Astronomical Union, 1980.