APA (7th ed.) Citation

Unsold, A. (1969). The New Cosmos. Springer-Verlag.

Chicago Style (17th ed.) Citation

Unsold, Albrecht. The New Cosmos. New York: Springer-Verlag, 1969.

MLA (9th ed.) Citation

Unsold, Albrecht. The New Cosmos. Springer-Verlag, 1969.