Four years,
by William Butler Yeats.
APA Citation
Yeats, W. B. (William Butler)., Cuala Press. (1921). Four years. Churchtown, Dundrum: The Cuala press.
MLA Citation
Yeats, W. B. (William Butler), 1865-1939, and Cuala Press. Four Years. Churchtown, Dundrum: The Cuala press, 1921.
Warning: These citations may not always be complete (especially for serials).