APA (7th ed.) Citation

Elgar, E., & Moore, J. N. (1990). Edward Elgar: Letters of a lifetime. Clarendon Press.

Chicago Style (17th ed.) Citation

Elgar, Edward, and Jerrold Northrop Moore. Edward Elgar: Letters of a Lifetime. Oxford: Clarendon Press, 1990.

MLA (9th ed.) Citation

Elgar, Edward, and Jerrold Northrop Moore. Edward Elgar: Letters of a Lifetime. Clarendon Press, 1990.