29 julio 2020
OpenStax College, Introductory Statistics. OpenStax College. 19 September 2013.
Introductory Statistics by Douglas S. Shafer, Zhiyi Zhang
Online Statistics Education: A Multimedia Course of Study (http://onlinestatbook.com/). Project Leader: David M. Lane, Rice University.
OpenIntro Statistics: Third Edition by David M Diez, Christopher D Barr, Mine Çetinkaya-Rundel