APA (7th ed.) Citation

Epstein, E. (2013). How an Icelander's 'Viking journey' helped create a trivia sensation. Fortune.com, 1.

Chicago Style (17th ed.) Citation

Epstein, Eli. "How an Icelander's 'Viking Journey' Helped Create a Trivia Sensation." Fortune.com 2013: 1.

MLA (9th ed.) Citation

Epstein, Eli. "How an Icelander's 'Viking Journey' Helped Create a Trivia Sensation." Fortune.com, 2013, p. 1.