1. Centers for Disease Control and Prevention. The Tuskegee Timeline. 2016. http://www.cdc.gov/tuskegee/timeline.htm
2. Laerd Dissertation. Principles of research ethics. 2012. http://dissertation.laerd.com/principles-of-research-ethics.php#second
3. Indigenous worldviews, knowledge, and research: the development of an indigenous research paradigm;Hart;J Indigenous Voices Soc Work,2010