Yeats, W. B. (1921). Four years. The Cuala Press, Irish University Press.
Chicagoスタイル(17版)引用形式Yeats, W. B. Four Years. Churchtown, Dundrum : [Shannon: The Cuala Press, Irish University Press, 1921.
MLA(8版)引用形式Yeats, W. B. Four Years. The Cuala Press, Irish University Press, 1921.
警告: この引用は必ずしも正確ではありません.