Bøker Eastwood, James (1940): . Pilot Press. Heathcote, Tony (1999): . Pen & Sword. ISBN 0-85052-696-5. Jackson, Julian (2003): . Oxford University Press. ISBN 0-19-280300-X. McKinstry, Leo (2014): . John Murray. ISBN 978-1-84854-704-9. Prażmowska, Anita J. (2004): . Cambridge University Press. ISBN 0-521-52938-7. Quinlivian, Peter (2006): . Sydney: New Holland. ISBN 978-1-74110-486-8. Soutar, Andrew (1940): . Hutchinson. Zychowicz, Piotr (2012): . Dom Wydawniczy Rebis, Poznań. ISBN 978-83-7510-921-4.