
- Author: Stan Wagon Daniel J. Velleman
- Language: English
- Year: 2020

- Author: Faires J. Douglas, Wells David (ed.)
- Language: English
- Year: 2014

- Author: James Tanton (author)
- Language: English
- Year: 2018

- Author: Scott Annin
- Language: English
- Year: 2015

- Author: Krusemeyer Mark I, Gilbert George T, Larson Loren C
- Language: English
- Year: 2012

- Author: Gardner Martin, Gardner Martin, Henle Michael, Hopkins Brian
- Language: English
- Year: 2012

- Author: Rick Gillman
- Language: English
- Year: 2003

- Author: Michael Henle Brian Hopkins
- Language: English
- Year: 2012

- Author: Titu Andreescu, Zuming Feng, Mathematical Association of America
- Language: English
- Year: 2005