APA (7th ed.) Citation

Roes, N., & Kennedy, W. E. (1968). The space-flight encyclopedia. Follett Pub. Co..

Chicago Style (17th ed.) Citation

Roes, Nicholas, and William E. Kennedy. The Space-flight Encyclopedia. Chicago: Follett Pub. Co., 1968.

MLA (9th ed.) Citation

Roes, Nicholas, and William E. Kennedy. The Space-flight Encyclopedia. Follett Pub. Co., 1968.