APA (7th ed.) Citation

Asimov, I. (1987). The Dark void. Severn House.

Chicago Style (17th ed.) Citation

Asimov, Isaac. The Dark Void. London: Severn House, 1987.

MLA (9th ed.) Citation

Asimov, Isaac. The Dark Void. Severn House, 1987.

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