1. Abramovich, S., Schunn, C., & Higashi, R. M. (2013). Are badges useful in education?: It depends upon the type of badge and expertise of learner. Educational Technology Research and Development, 61(2), 217–232.
2. Ahn, J., & Erickson, I. (2016). Connecting fields: Information, learning sciences, and education. [Special Issue] The Information Society, 32(2).
3. American Association of Collegiate Registrars and Admissions Officers [AACRAO]. (2017). Transfer credit policy: Results of the AACRAO May 2017 60-second survey. Retrieved from http://www.aacrao.org/docs/default-source/surveyresults/transfer-credit-policy%2D%2D-may-60-second-survey.pdf
4. Badge Alliance. (2014). Endorsement [Webpage]. Retrieved from http://www.badgealliance.org/endorsement
5. Badge Summit. (2018, June 23). Conference Website [Webpage]. Retrieved from https://badgesummit.weebly.com