APA (7th ed.) Citation

Unsöld, A., & Baschek, B. (1991). The New Cosmos (Fourth Completely rev. edition.). Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

Unsöld, Albrecht, and Bodo Baschek. The New Cosmos. Fourth Completely rev. edition. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991.

MLA (9th ed.) Citation

Unsöld, Albrecht, and Bodo Baschek. The New Cosmos. Fourth Completely rev. edition. Springer Berlin Heidelberg, 1991.