APA (7th ed.) Citation

Royston, R. (1985). Cities 2000. Facts on File.

Chicago Style (17th ed.) Citation

Royston, Robert. Cities 2000. New York, N.Y: Facts on File, 1985.

MLA (9th ed.) Citation

Royston, Robert. Cities 2000. Facts on File, 1985.

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