14 December 1937 letter per Nihon Senso-shi Shiryo 9, Kawade-shobo Shinsya, Tokyo. 1973, p. 120 [Nanking Anzen-ku To-U An No. 1 Bunsho (Z1)]
John Rabe: Citations en anglais
17 December 1937
13 December 1937 diary per Woods, John E. (1998). The Good Man of Nanjing: the Diaries of John Rabe. p. 67.