APA (7th ed.) Citation

Gardiner, A. (1997). The Mathematical Olympiad Handbook. Oxford.

Chicago Style (17th ed.) Citation

Gardiner, A. The Mathematical Olympiad Handbook. Oxford, 1997.

MLA (8th ed.) Citation

Gardiner, A. The Mathematical Olympiad Handbook. Oxford, 1997.

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