APA (7th ed.) Citation

Morrison, D., Wolff, S. C., & Fraknoi, A. (1995). Abell's exploration of the universe (7th edition.). Saunders College Publishing.

Chicago Style (17th ed.) Citation

Morrison, David, Sidney C. Wolff, and Andrew Fraknoi. Abell's Exploration of the Universe. 7th edition. Philadelphia: Saunders College Publishing, 1995.

MLA (8th ed.) Citation

Morrison, David, et al. Abell's Exploration of the Universe. 7th edition. Saunders College Publishing, 1995.