Creighton 1890, p. 47. Creighton, Mandell (1890). «Green, John Richard». In: Stephen, Leslie; Lee, Sidney. Dictionary of National Biography. 28. Nova Iorque: Macmillan and Co. pp. 46–49
Cousin 1910, p. 167; Creighton 1890, p. 48. Cousin, John William (1910). A Short Biographical Dictionary of English Literature. Londres: J. M. Dent & Sons Creighton, Mandell (1890). «Green, John Richard». In: Stephen, Leslie; Lee, Sidney. Dictionary of National Biography. 28. Nova Iorque: Macmillan and Co. pp. 46–49