APA (7th ed.) Citation

Lianou, S., Grebel, E. K., & Koch-Hansen, A. (2009). Early-type dwarf galaxies in the M81 group. Proceedings of the International Astronomical Union, 5(?), . https://doi.org/10.1017/S1743921310002620

Chicago Style (17th ed.) Citation

Lianou, Sofia, Eva K. Grebel, and Andreas Koch-Hansen. "Early-type Dwarf Galaxies in the M81 Group." Proceedings of the International Astronomical Union 5, no. ? (2009). https://doi.org/10.1017/S1743921310002620.

MLA (9th ed.) Citation

Lianou, Sofia, et al. "Early-type Dwarf Galaxies in the M81 Group." Proceedings of the International Astronomical Union, vol. 5, no. ?, 2009, https://doi.org/10.1017/S1743921310002620.