APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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