APA (7th ed.) Citation

Simmonds, C., Bauer, F. E., Thuan, T. X., Izotov, Y. I., Stern, D., & Harrison, F. A. (2016). Do some AGN lack X-ray emission? Astronomy & Astrophysics / Astronomie et Astrophysique, 596, 1. https://doi.org/10.1051/0004-6361/201629310

Chicago Style (17th ed.) Citation

Simmonds, C., F. E. Bauer, T. X. Thuan, Y. I. Izotov, D. Stern, and F. A. Harrison. "Do Some AGN Lack X-ray Emission?" Astronomy & Astrophysics / Astronomie Et Astrophysique 596 (2016): 1. https://doi.org/10.1051/0004-6361/201629310.

MLA (9th ed.) Citation

Simmonds, C., et al. "Do Some AGN Lack X-ray Emission?" Astronomy & Astrophysics / Astronomie Et Astrophysique, vol. 596, 2016, p. 1, https://doi.org/10.1051/0004-6361/201629310.