APA引文

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引文

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

警告：這些引文格式不一定是100％准確.