APA (7th ed.) Citation

Unsold, A., & McCrea, W. H. (1969). The new cosmos. Springer Verlag.

Chicago Style (17th ed.) Citation

Unsold, Albrecht, and William H. McCrea. The New Cosmos. New York: Springer Verlag, 1969.

MLA (8th ed.) Citation

Unsold, Albrecht, and William H. McCrea. The New Cosmos. Springer Verlag, 1969.