Singer, Peter (2000). Writings on an Ethical Life. Open Road Media. p. 258. ISBN9781497645585. [In this version of the story, Singer writes of his and his wife's conversion happening "Over the next two months".]
britannica.com
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"Peter Singer: Eine bessere Welt für Mensch und Tier" [Peter Singer: A Better World for People and Animals] (video). Graz, Austria: Universität Graz. 11 June 2017. Event occurs at 5:33. Archived from the original on 30 December 2019. Retrieved 26 March 2024 – via YouTube.
"Peter Singer". Archived from the original on 16 October 2023. Retrieved 10 October 2023.
"Peter Singer: Eine bessere Welt für Mensch und Tier" [Peter Singer: A Better World for People and Animals] (video). Denkzeitraum. Graz, Austria: Universität Graz. 11 June 2017. Event occurs at 21:04. Archived from the original on 22 November 2019. Retrieved 26 March 2024 – via YouTube.
Jollimore, Troy (6 February 2017). "Impartiality". Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Archived from the original on 25 August 2021. Retrieved 28 October 2018.
Singer, Peter; Lewis, Edward (16 March 2010). "Ethics and the Left". Newleftproject.org. Archived from the original on 28 October 2018. Retrieved 28 October 2018.
McBryde Johnson, Harriet (16 February 2003). "Unspeakable Conversations". The New York Times Magazine. Archived from the original on 13 August 2023. Retrieved 28 October 2018.
"Peter Singer: Eine bessere Welt für Mensch und Tier" [Peter Singer: A Better World for People and Animals] (video). Graz, Austria: Universität Graz. 11 June 2017. Event occurs at 5:33. Archived from the original on 30 December 2019. Retrieved 26 March 2024 – via YouTube.
"Peter Singer: Eine bessere Welt für Mensch und Tier" [Peter Singer: A Better World for People and Animals] (video). Denkzeitraum. Graz, Austria: Universität Graz. 11 June 2017. Event occurs at 21:04. Archived from the original on 22 November 2019. Retrieved 26 March 2024 – via YouTube.