Abell, G. O. (1969). Exploration of the universe (2nd ed.). Holt, Rinehart and Winston.
Chicago Style (17th ed.) CitationAbell, George O. Exploration of the Universe. 2nd ed. New York: Holt, Rinehart and Winston, 1969.
MLA (9th ed.) CitationAbell, George O. Exploration of the Universe. 2nd ed. Holt, Rinehart and Winston, 1969.
Warning: These citations may not always be 100% accurate.