APA (7th ed.) Citation

Pontifical Academy of Sciences. (1983). The nuclear winter. Origins, 13, 625-627.

Chicago Style (17th ed.) Citation

Pontifical Academy of Sciences. "The Nuclear Winter." Origins 13 (1983): 625-627.

MLA (9th ed.) Citation

Pontifical Academy of Sciences. "The Nuclear Winter." Origins, vol. 13, 1983, pp. 625-627.

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