APA

Foster R. B., . (2003). W. B. Yeats, a Life 11. [England]: Oxford University Press.

Chicago

Foster R B, . 2003. W. B. Yeats, a Life 11. [England]: Oxford University Press.

Harvard

Foster R. B., . (2003). W. B. Yeats, a Life 11. [England]: Oxford University Press.

MLA

Foster R B, . W. B. Yeats, a Life 11. [England]: Oxford University Press. 2003.