Bushrui, S. B., ed., Sunshine and the Moon's Delight, Colin Smythe, 1972.

Bushrui edits several essays on Synge's plays, including several on his use of language.

Greene, David H., and Edward M. Stephens, J. M. Synge, 1871-1909, rev. ed., Macmillan, 1989.

This indispensable biography contains little criticism of the works, but it offers a wealth of information about Synge's life and influences on his work.

Price, Alan, Synge and Anglo-Irish Drama, Methuen, 1961.

Price presents insightful analyses of Synge's plays and places them in a literary historical context.

Skelton, Robin, J. M. Synge and His World, Viking, 1971.

Skelton's admirable work provides commentary on Synge's life as well as relevant historical background.