1. American Press Institute. (2015). Social and demographic differences in news habits and attitudes. Retrieved from http://www.americanpressinstitute.org/publications/reports/survey-research/social-demographic-differences-news-habits-attitudes/
2. Association of Zoos and Aquariums (AZA). (2013). Association of zoos and aquariums. Retrieved from https://www.aza.org/about-aza/
3. Association of Zoos and Aquariums (AZA). (2015). AZA home. Retrieved from https://www.aza.org/
4. AZA News Release. (2015). The accredited zoos and aquariums in your community are bringing the risk of wildlife extinction to the forefront on May 15, Endangered Species Day. Retrieved from https://www.aza.org/PressRoom/detail.aspx?id=38486