/44/ Lihat reportase Stuart Wolpert, “Life on Earth likely started at least 4.1 billion years ago― much earlier than scientists had thought”, UCLA Newsroom, 19 October 2015, pada http://newsroom.ucla.edu/releases/life-on-earth-likely-started-at-least-4-1-billion-years-ago-much-earlier-than-scientists-had-thought. Sumber primer (abstrak) lihat Elizabeth A. Bell, Patrick Boehnke, T. Mark Harrison, Wendy L. Mao, “Potentially biogenic carbon preserved an a 4.1 billion-year-old zircon”, PNAS vol. 112, no. 47, pp. 14518-14521; contributed by T. Mark Harrison, 4 September 2015, pada http://www.pnas.org/content/112/47/14518.abstract. Naskah format Pdf tersedia di http://www.pnas.org/content/112/47/14518.full.pdf.
/45/ George Johnson, “Scientists Ponder the Prospect of Contagious Cancer”, The New York Times, 22 February 2016, pada http://mobile.nytimes.com/2016/02/23/science/scientists-ponder-the-prospect-of-contagious-cancer.html.
/46/ Allan Bérubé, Coming Out Under Fire: The History of Gay Men and Women in World War II(edisi kedua; Chapel Hill: University of North Carolina Press, 2010; edisi pertama 1990).
/47/ Robert Aldrich dan Garry Wotherspoon, Who’s Who in Contemporary Gay and Lesbian History: From Antiquity to World War II (2 jilid) (London/New York: Routledge, cetakan pertama 2001).
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