References
- Mann , C. G. 2005 . 1491: New revelations of the Americas before Columbus , New York : Knopf .
- Mann , C. G. 2011 . 1493: Uncovering the new world Columbus created , New York : Knopf .
- Merryfield , M. M. 2012 . Four strategies for teaching open-mindedness . Social Studies and the Young Learner , 25 : 18 – 22 .