Cita APA (7th ed.)

Roos, M. (1997). Introduction to cosmology (2a. ed.). John Wiley.

Cita Chicago (17th ed.)

Roos, Matts. Introduction to Cosmology. 2a. ed. Chichester: John Wiley, 1997.

Cita MLA (9th ed.)

Roos, Matts. Introduction to Cosmology. 2a. ed. John Wiley, 1997.