APA (7th ed.) Citation

Parker, S., & Passachoff, J. M. (1993). McGraw-Hill encyclopedia of astronomy (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Parker, Sybil, and Jay M. Passachoff. McGraw-Hill Encyclopedia of Astronomy. 2nd ed. New York: McGraw-Hill, 1993.

MLA (9th ed.) Citation

Parker, Sybil, and Jay M. Passachoff. McGraw-Hill Encyclopedia of Astronomy. 2nd ed. McGraw-Hill, 1993.