Mathematical Olympiad

World Scientific Publishing Company

First Step To Mathematical Olympiad Problems, A: 1 (Mathematical Olympiad Series)

The Mathematical Association of America

From Erdös to Kiev Paperback: Problems of Olympiad Caliber (Dolciani Mathematical Expositions)

WSPC

Hungarian Mathematical Olympiad (1964-1997): Problems And Solutions: 20 (Mathematical Olympiad Series)

Birkhäuser

Mathematical Olympiad Treasures (English Edition)

World Scientific Publishing Company

Problems and Solutions in Mathematical Olympiad: Secondary 2 (English Edition)

Lulu.com

Irish Mathematical Olympiad Manual: null        

World Scientific

LENINGRAD MATHEMATICAL OLYMPIADS (1961-1991): 24 (Mathematical Olympiad Series)

Mathematical Olympiad in Primary Schools (Grade 5 Version A)(Chinese Edition)

Mathematical Olympiad small books: High volume: 12: Mathematics in the number theory problem(Chinese Edition)

World Scientific Publishing Company

Mathematical Olympiad in China (2017–2018): Problems and Solutions (Mathematical Olympiad Series Book 18) (English Edition)