Cite
2251+158 (3C 454.3): detection of an arc-like structure on parsec scales.
MLA
Britzen, S., et al. “2251+158 (3C 454.3): Detection of an Arc-like Structure on Parsec Scales.” Astronomy & Astrophysics / Astronomie et Astrophysique, vol. 557, no. 1, Sept. 2013, pp. 1–17. EBSCOhost, https://doi.org/10.1051/0004-6361/201220147.
APA
Britzen, S., Shan-Jie Qian, Witzel, A., Krichbaum, T. P., Aller, M., Aller, H., Kurtanidze, O., Vercellone, S., & Richter, G. M. (2013). 2251+158 (3C 454.3): detection of an arc-like structure on parsec scales. Astronomy & Astrophysics / Astronomie et Astrophysique, 557(1), 1–17. https://doi.org/10.1051/0004-6361/201220147
Chicago
Britzen, S., Shan-Jie Qian, A. Witzel, T. P. Krichbaum, M. Aller, H. Aller, O. Kurtanidze, S. Vercellone, and G. M. Richter. 2013. “2251+158 (3C 454.3): Detection of an Arc-like Structure on Parsec Scales.” Astronomy & Astrophysics / Astronomie et Astrophysique 557 (1): 1–17. doi:10.1051/0004-6361/201220147.