Cita APA

Culver, R. B., & Roberts, S. (1997). Laboratory exercises in introductory astronomy. Forth Worth, TX: Harcourt Brace.

Chicago Style Citation

Culver, Roger B., i Sean Roberts. Laboratory Exercises in Introductory Astronomy. Forth Worth, TX: Harcourt Brace, 1997.

Cita MLA

Culver, Roger B., i Sean Roberts. Laboratory Exercises in Introductory Astronomy. Forth Worth, TX: Harcourt Brace, 1997.