APA (7th ed.) Citation

Zeilik, M., & Smith, E. V. P. (1987). Introductory astronomy and astrophysics. Saunders College Pub.

Chicago Style (17th ed.) Citation

Zeilik, Michael, and Elske Van Panhuys Smith. Introductory Astronomy and Astrophysics. Philadelphia: Saunders College Pub, 1987.

MLA (9th ed.) Citation

Zeilik, Michael, and Elske Van Panhuys Smith. Introductory Astronomy and Astrophysics. Saunders College Pub, 1987.