APA (7th ed.) Citation

Harrington, P. S. (2011). Cosmic challenge: The ultimate observing list for amateurs. Cambridge University Press. https://doi.org/10.1017/CBO9780511782084

Chicago Style (17th ed.) Citation

Harrington, Philip S. Cosmic Challenge: The Ultimate Observing List for Amateurs. Cambridge: Cambridge University Press, 2011. https://doi.org/10.1017/CBO9780511782084.

MLA (9th ed.) Citation

Harrington, Philip S. Cosmic Challenge: The Ultimate Observing List for Amateurs. Cambridge University Press, 2011. https://doi.org/10.1017/CBO9780511782084.