APA (7th ed.) Citation

Martell, S. L., & Grebel, E. K. (2011). Building the galactic halo from globular clusters: Evidence from chemically unusual red giants. Astronomy and astrophysics, 534(?), . https://doi.org/10.1051/0004-6361/201117644

Chicago Style (17th ed.) Citation

Martell, Sarah L., and Eva K. Grebel. "Building the Galactic Halo from Globular Clusters: Evidence from Chemically Unusual Red Giants." Astronomy and Astrophysics 534, no. ? (2011). https://doi.org/10.1051/0004-6361/201117644.

MLA (9th ed.) Citation

Martell, Sarah L., and Eva K. Grebel. "Building the Galactic Halo from Globular Clusters: Evidence from Chemically Unusual Red Giants." Astronomy and Astrophysics, vol. 534, no. ?, 2011, https://doi.org/10.1051/0004-6361/201117644.