APA Edition Citation

Napolitano. L. G. (1981). Space: Mankind's Fourth Environment. Pergamon Press.

Chicago Edition Citation

Napolitano. L. G. Space: Mankind's Fourth Environment. Oxford: Pergamon Press, 1981.

MLA Edition Citation

Napolitano. L. G. Space: Mankind's Fourth Environment. Pergamon Press, 1981.

Warning: These citations may not always be 100% accurate.