Frederick Douglass. My Escape from Slavery. Audiobook // YouTube, July 23, 2014. https://www.youtube.com/watch?v=jGi9jtS7MKc
Frederick Douglass (n. d.). Retrieved August 8, 2020, from https://www.pbs.org/wgbh/aia/part4/4p1539.html
10 Facts on Obesity. World Health Organization, October 16, 2017. https://www.who.int/features/factfiles/obesity/en
Marisa Meltzer. This Is Big: How the Founder of Weight Watchers Changed the World (and Me). L.: Chatto & Windus, 2020.
Robert J. Cole. H. J. Heinz to Buy Weight Watchers For $ 71 Million. May 5, 1978. https://www.nytimes.com/1978/05/05/archives/hj-heinz-to-buyweight-watchers-for-71-million-hj-heinz-agrees-to.html
Nicholas A. Christakis and James H. Fowler. The Spread of Obesity in a Large Social Network over 32 Years // New England Journal of Medicine. 357 (July 2007). P. 370–379.
Manisha Sinha. The Slave’s Cause: A History of Abolition. New Haven, CT: Yale University Press, 2016.
Sinha. The Slave’s Cause.
DeNeen L. Brown. Frederick Douglass Needed to See Lincoln. Would the President Meet with a Former Slave? // Washington Post. 2018. February 14. https://www.washingtonpost.com/news/retropolis/wp/2018/02/14/frederickdouglass-needed-to-see-lincoln-would-the-president-meet-with-a-formerslave
Tiziana Casciaro, Francesca Gino, and Maryam Kouchaki. The Contaminating Effects of Building Instrumental Ties: How Networking Can Make Us Feel Dirty // Administrative Science Quarterly. October 6, 2014. https://journals.sagepub.com/doi/10.1177/0001839214554990
Casciaro, Gino, and Kouchaki. The Contaminating Effects of Building Instrumental Ties.