APA (7th ed.) Citation

Hartnett, K. (2014). An abc Proof Too Tough Even for Mathematicians. The Best Writing on Mathematics 2013, 4, 225-230. https://doi.org/10.1515/9781400847990-022

Chicago Style (17th ed.) Citation

Hartnett, Kevin. "An Abc Proof Too Tough Even for Mathematicians." The Best Writing on Mathematics 2013 4 (2014): 225-230. https://doi.org/10.1515/9781400847990-022.

MLA (9th ed.) Citation

Hartnett, Kevin. "An Abc Proof Too Tough Even for Mathematicians." The Best Writing on Mathematics 2013, vol. 4, 2014, pp. 225-230, https://doi.org/10.1515/9781400847990-022.

Warning: These citations may not always be 100% accurate.