Watman, Walt. 《Memorial Note: Richard Mullins: July 1, 1940 – July 24, 2010》. Bioenergetic Analysis 21, no. 1 (三月 1, 2022): 11–12. 见于 十月 14, 2025. https://bioenergetic-analysis.com/article/view/0743-4804-2011-21-11.