APA (7th ed.) Citation

Anderson, P. (1990). The Shield of time. Tor Books.

Chicago Style (17th ed.) Citation

Anderson, Poul. The Shield of Time. New York: Tor Books, 1990.

MLA (9th ed.) Citation

Anderson, Poul. The Shield of Time. Tor Books, 1990.

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