Heuveline, Patrick (2001). «The Demographic Analysis of Mortality in Cambodia». Forced Migration and Mortality. National Academy Press. pp. 103–104. ISBN9780309073349. «Subsequent reevaluations of the demographic data situated the death toll for the [civil war] in the order of 300 000 or less.»
Banister, Judith; Johnson, E. Paige (1993). «After the Nightmare: The Population of Cambodia». Genocide and Democracy in Cambodia: The Khmer Rouge, the United Nations and the International Community. Yale University Southeast Asia Studies. p. 87. ISBN9780938692492. «An estimated 275 000 excess deaths. We have modeled the highest mortality we can justify for the early 1970s.»
Siempre!.. Editorial Siempre. 2011. Consultado el 3 de agosto de 2021.
Relaciones internacionales. Facultad de Ciencias Políticas y Sociales, Universidad Nacional Autónoma de México. 1998. Consultado el 3 de agosto de 2021.