APA (7th ed.) Citation

Kniazev, A. Y., Grebel, E. K., & Martínez-Delgado, D. (2013). A search for planetary nebulae with the SDSS: The outer regions of M31. Arxiv.

Chicago Style (17th ed.) Citation

Kniazev, Alexei Y., Eva K. Grebel, and David Martínez-Delgado. "A Search for Planetary Nebulae with the SDSS: The Outer Regions of M31." Arxiv 2013.

MLA (9th ed.) Citation

Kniazev, Alexei Y., et al. "A Search for Planetary Nebulae with the SDSS: The Outer Regions of M31." Arxiv, 2013.