APA (7th ed.) Citation

Quirrenbach, A. (1997). Sodium laser guide star system of ALFA. Adaptive optics and applications.

Chicago Style (17th ed.) Citation

Quirrenbach, Andreas. "Sodium Laser Guide Star System of ALFA." Adaptive Optics and Applications 1997.

MLA (9th ed.) Citation

Quirrenbach, Andreas. "Sodium Laser Guide Star System of ALFA." Adaptive Optics and Applications, 1997.

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