APA (7th ed.) Citation

Asimov, I. (1990). Nightfall. Doubleday.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Nightfall. Newyork: Doubleday, 1990.

MLA (9th ed.) Citation

Asimov, Isaac. Nightfall. Doubleday, 1990.

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