APA (7th ed.) Citation

Kniazev, A. Y., & Grebel, E. K. (2004). New planetary nebulae in the outer disk and Halo of M31. Bulletin of the American Astronomical Society, 36, .

Chicago Style (17th ed.) Citation

Kniazev, Alexei Y., and Eva K. Grebel. "New Planetary Nebulae in the Outer Disk and Halo of M31." Bulletin of the American Astronomical Society 36 (2004).

MLA (9th ed.) Citation

Kniazev, Alexei Y., and Eva K. Grebel. "New Planetary Nebulae in the Outer Disk and Halo of M31." Bulletin of the American Astronomical Society, vol. 36, 2004.