APA (7th ed.) Citation

Gilbert, J., & Lockley, N. (1999). Leonardo. D. Kindersley.

Chicago Style (17th ed.) Citation

Gilbert, John, and Neil Lockley. Leonardo. London: D. Kindersley, 1999.

MLA (9th ed.) Citation

Gilbert, John, and Neil Lockley. Leonardo. D. Kindersley, 1999.

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