APA (7th ed.) Citation

Ludlow, A. D., & Springel, V. (2009). The unorthodox orbits of substructure halos. The astrophysical journal, 692(1), . https://doi.org/10.1088/0004-637X/692/1/931

Chicago Style (17th ed.) Citation

Ludlow, Aaron D., and Volker Springel. "The Unorthodox Orbits of Substructure Halos." The Astrophysical Journal 692, no. 1 (2009). https://doi.org/10.1088/0004-637X/692/1/931.

MLA (9th ed.) Citation

Ludlow, Aaron D., and Volker Springel. "The Unorthodox Orbits of Substructure Halos." The Astrophysical Journal, vol. 692, no. 1, 2009, https://doi.org/10.1088/0004-637X/692/1/931.