《牛津国家人物传记大辞典》 線上版. 牛津大學出版社. 2004. doi:10.1093/ref:odnb/72879. 需要订阅或英国公共图书馆会员资格 Flavell, R. B. Sir Ralph Riley. 23 October 1924 - 27 August 1999. Biographical
(PDF)于2013-10-22). Levitt EA, James NM, Flavell P (December 1975). "A clinical trial of electrosleep therapy with a psychiatric inpatient sample". Aust N
(原始内容存档于2019-03-31). Michael W. Bevan, Richard B. Flavell, Mary-Dell Chilton. A chimaeric antibiotic resistance gene as a selectable marker for plant cell transformation