APA (7th ed.) Citation

McQuinn, K. B. W., Skillman, E. D., Dolphin, A. E., Berg, D., & Kennicutt, R. (2016). THE DISTANCE TO M51. The Astrophysical journal, 826(1), 21. https://doi.org/10.3847/0004-637X/826/1/21

Chicago Style (17th ed.) Citation

McQuinn, Kristen. B. W., Evan D. Skillman, Andrew E. Dolphin, Danielle Berg, and Robert Kennicutt. "THE DISTANCE TO M51." The Astrophysical Journal 826, no. 1 (2016): 21. https://doi.org/10.3847/0004-637X/826/1/21.

MLA (9th ed.) Citation

McQuinn, Kristen. B. W., et al. "THE DISTANCE TO M51." The Astrophysical Journal, vol. 826, no. 1, 2016, p. 21, https://doi.org/10.3847/0004-637X/826/1/21.