Open Science Collaboration. "Estimating the Reproducibility of Psychological Science." Science, American Association for the Advancement of Science, 28 Aug. 2015, science.sciencemag.org/content/349/6251/aac4716.
Scollon, C.N. "Research Designs." Noba Series: Psychology, edited by R. Biswas-Diener and E. Diener, DEF, 2018, noba.to/acxb2thy.
"U.S. Public Health Service Syphilis Study at Tuskegee." Centers for Disease Control and Prevention, 30 Aug. 2017, www.cdc.gov/tuskegee/timeline.htm.