Holton, D. (2010). First step to Mathematical olympiad problems. World Scientific.
Čikaški stil citiranjaHolton, Derek. First Step to Mathematical Olympiad Problems. New Jersey: World Scientific, 2010.
MLA način citiranjaHolton, Derek. First Step to Mathematical Olympiad Problems. World Scientific, 2010.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.