^Mitchell, Donald (ed) (2004). Letters From A Life: Selected Letters of Benjamin Britten, Vol. 3 1946–51. London: Faber and Faber.
ISBN0-571-22282-X. p. 137
^Whitcomb, Ian (2012). Ukulele Heroes: The Golden Age. Milwaukee, Wisconsin: Hal Leonard Books. p. 83.
ISBN978-1-4584-1654-4.
^Cole, Suzanne (2013). "Things that really interest ME: Tippett and Early Music". In Gloag, Kenneth and Jones, Nicholas. The Cambridge Companion to Michael Tippett. Cambridge: Cambridge University Press. pp. 48–67.
ISBN978-1-107-60613-5. p. 59
^Mitchell, Donald (ed) (2004). Letters From A Life: Selected Letters of Benjamin Britten, Vol. 3 1946–51. London: Faber and Faber.
ISBN0-571-22282-X. p. 207
^Mitchell, Donald (ed) (2004). Letters From A Life: Selected Letters of Benjamin Britten, Vol. 3 1946–51. London: Faber and Faber.
ISBN0-571-22282-X. p. 137
^Whitcomb, Ian (2012). Ukulele Heroes: The Golden Age. Milwaukee, Wisconsin: Hal Leonard Books. p. 83.
ISBN978-1-4584-1654-4.
^Cole, Suzanne (2013). "Things that really interest ME: Tippett and Early Music". In Gloag, Kenneth and Jones, Nicholas. The Cambridge Companion to Michael Tippett. Cambridge: Cambridge University Press. pp. 48–67.
ISBN978-1-107-60613-5. p. 59
^Mitchell, Donald (ed) (2004). Letters From A Life: Selected Letters of Benjamin Britten, Vol. 3 1946–51. London: Faber and Faber.
ISBN0-571-22282-X. p. 207