Gardiner, A. (2000). Mathematical Olympiad handbook: An introduction to problem solving based on the first 32 British mathematical olympiads 1965-1996. Oxford University Press.

Gardiner, A. Mathematical Olympiad Handbook: An Introduction to Problem Solving Based on the First 32 British Mathematical Olympiads 1965-1996. Oxford ; New York: Oxford University Press, 2000.

Gardiner, A. Mathematical Olympiad Handbook: An Introduction to Problem Solving Based on the First 32 British Mathematical Olympiads 1965-1996. Oxford University Press, 2000.