APA (7th ed.) Citation

Kanopy (Firm). (2014). Hard problems: The road to the world's toughest math contest. Kanopy Streaming.

Chicago Style (17th ed.) Citation

Kanopy (Firm). Hard Problems: The Road to the World's Toughest Math Contest. [San Francisco, California, USA]: Kanopy Streaming, 2014.

MLA (9th ed.) Citation

Kanopy (Firm). Hard Problems: The Road to the World's Toughest Math Contest. Kanopy Streaming, 2014.