
The Heretic's Feast: A History of Vegetarianism (Hanover and London: University Press of New England, 1996), p. 16 https://books.google.it/books?id=rIjZo-cvifAC&pg=PA16.
"They Hunger for Success" https://www.si.com/vault/1977/02/28/560840/they-hunger-for-success, interview with Sports Illustrated (February 28, 1977).
The Heretic's Feast: A History of Vegetarianism (Hanover and London: University Press of New England, 1996), p. 16 https://books.google.it/books?id=rIjZo-cvifAC&pg=PA16.
"Personal Health; New Research on the Vegetarian Diet", in The New York Times (12 October 1983) http://www.nytimes.com/1983/10/12/garden/personal-health-new-research-on-the-vegetarian-diet.html
Source: Dr. Spock's Baby and Child Care (1945), Seventh edition (1998), pp. 346-347
" Arnold Schwarzenegger: Stop eating meat and save the planet http://www.bbc.co.uk/newsbeat/article/35038053/arnold-schwarzenegger-stop-eating-meat-and-save-the-planet", in BBC Newsbeat website (8 December 2015)
2010s
I Wanna Learn a Love Song
Song lyrics, Verities & Balderdash (1974)
2010s, 2016, August, Speech at rally in Wilmington, North Carolina (August 9, 2016)
Interview in the documentary-film What the Health by Kip Andersen (2017).