Cita APA (7a ed.)

Ryden, B. (2014). Introduction to cosmology (First edition, Pearson new international edition.). Pearson.

Cita Chicago Style (17a ed.)

Ryden, Barbara. Introduction to Cosmology. First edition, Pearson new international edition. Harlow, England: Pearson, 2014.

Cita MLA (8a ed.)

Ryden, Barbara. Introduction to Cosmology. First edition, Pearson new international edition. Pearson, 2014.