Robert Burns (1848). “The Complete Works of Robert Burns: With an Account of His Life, and a Criticism on His Writings. To which are Prefixed, Some Observations on the Character and Condition of the Scottish Peasantry”, p.256
"Emma Thompson and Tom Hanks Talk SAVING MR. BANKS, Bringing the Essence of Their Characters to the Screen, and How P.L. Travers Would Have Reacted". Interview with Christina Radish, collider.com. December 9, 2013.