APA (7th ed.) Citation

Asimov, I. (1993). Nightfall. Grafton Books.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Nightfall. London: Grafton Books, 1993.

MLA (9th ed.) Citation

Asimov, Isaac. Nightfall. Grafton Books, 1993.

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