APA

Keats J., . (1956). The poetical works of John Keats. London: Oxford University Press.

Chicago

Keats John, . 1956. The poetical works of John Keats. London: Oxford University Press.

Harvard

Keats J., . (1956). The poetical works of John Keats. London: Oxford University Press.

MLA

Keats John, . The poetical works of John Keats. London: Oxford University Press. 1956.