APA (7th ed.) Citation

Lianou, S., Grebel, E. K., & Koch-Hansen, A. (2010). Dwarf spheroidals in the M81 group: Metallicity distribution functions and population gradients. Astronomy and astrophysics, 521(?), . https://doi.org/10.1051/0004-6361/200913364

Chicago Style (17th ed.) Citation

Lianou, Sofia, Eva K. Grebel, and Andreas Koch-Hansen. "Dwarf Spheroidals in the M81 Group: Metallicity Distribution Functions and Population Gradients." Astronomy and Astrophysics 521, no. ? (2010). https://doi.org/10.1051/0004-6361/200913364.

MLA (9th ed.) Citation

Lianou, Sofia, et al. "Dwarf Spheroidals in the M81 Group: Metallicity Distribution Functions and Population Gradients." Astronomy and Astrophysics, vol. 521, no. ?, 2010, https://doi.org/10.1051/0004-6361/200913364.