Citazione APA

Unsold, A., & Bascheck, B. B. (2002). new cosmos: An introduction to astronomy and astrophysics (5th ed.). Springer.

Stile di citazione Chicago

Unsold, Albrecht, e Bodo Brewer Bascheck. New Cosmos: An Introduction to Astronomy and Astrophysics. 5th ed. New York: Springer, 2002.

Citazione MLA

Unsold, Albrecht, e Bodo Brewer Bascheck. New Cosmos: An Introduction to Astronomy and Astrophysics. 5th ed. Springer, 2002.