APA Edition Citation

Baker, R. H., & Fredrick, L. W. (1971). Astronomy (9th ed.).

Chicago Edition Citation

Baker, Robert H., and Laurence W. Fredrick. Astronomy. 9th ed. 1971.

MLA Edition Citation

Baker, Robert H., and Laurence W. Fredrick. Astronomy. 9th ed. 1971.

Warning: These citations may not always be 100% accurate.