APA (7th ed.) Citation

Riopelle, C., & Gardner, T. (2007). Tim Gardener : new works / Christopher Riddle: New works. National Gallery.

Chicago Style (17th ed.) Citation

Riopelle, Christopher, and Tim Gardner. Tim Gardener : New Works / Christopher Riddle: New Works. London: National Gallery, 2007.

MLA (9th ed.) Citation

Riopelle, Christopher, and Tim Gardner. Tim Gardener : New Works / Christopher Riddle: New Works. National Gallery, 2007.

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