APA (7th ed.) Citation

Murphy, B., & Nance, D. (1999). Earth science today. Brooks/Cole [u.a.].

Chicago Style (17th ed.) Citation

Murphy, Brendan, and Damian Nance. Earth Science Today. Pacific Grove, CA [u.a.]: Brooks/Cole [u.a.], 1999.

MLA (9th ed.) Citation

Murphy, Brendan, and Damian Nance. Earth Science Today. Brooks/Cole [u.a.], 1999.