APA (7th ed.) Citation

Hart, R. E., Bamford, S. P., Keel, W. C., Kruk, S. J., Masters, K. L., Simmons, B. D., & Smethurst, R. J. (2018). Galaxy Zoo: Constraining the origin of spiral arms. Oxford University Press.

Chicago Style (17th ed.) Citation

Hart, Ross E., Steven P. Bamford, William C. Keel, Sandor J. Kruk, Karen L. Masters, Brooke D. Simmons, and Rebecca J. Smethurst. Galaxy Zoo: Constraining the Origin of Spiral Arms. Oxford University Press, 2018.

MLA (9th ed.) Citation

Hart, Ross E., et al. Galaxy Zoo: Constraining the Origin of Spiral Arms. Oxford University Press, 2018.