APA (7th ed.) Citation

Ducourant, C., Klüter, J., Wambsganß, J., & Bastian, U. (2018). Gaia GraL: Gaia DR2 gravitational lens systems; II. The known multiply imaged quasars. Astronomy and astrophysics, 618, . https://doi.org/10.1051/0004-6361/201833480

Chicago Style (17th ed.) Citation

Ducourant, Christine, Jonas Klüter, Joachim Wambsganß, and Ulrich Bastian. "Gaia GraL: Gaia DR2 Gravitational Lens Systems; II. The Known Multiply Imaged Quasars." Astronomy and Astrophysics 618 (2018). https://doi.org/10.1051/0004-6361/201833480.

MLA (9th ed.) Citation

Ducourant, Christine, et al. "Gaia GraL: Gaia DR2 Gravitational Lens Systems; II. The Known Multiply Imaged Quasars." Astronomy and Astrophysics, vol. 618, 2018, https://doi.org/10.1051/0004-6361/201833480.