Thwaite, A. (1978). Twentieth-Century English poetry: An introduction. Heinemann.
Chicago Style (17th ed.) ZitazioaThwaite, Anthony. Twentieth-Century English Poetry: An Introduction. London: Heinemann, 1978.
MLA (9th ed.) ZitazioaThwaite, Anthony. Twentieth-Century English Poetry: An Introduction. Heinemann, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.