APA

Keats J., . (1927). The poetical works of John Keats. Londres (Inglaterra): Oxford University Press.

Chicago

Keats John, . 1927. The poetical works of John Keats. Londres (Inglaterra): Oxford University Press.

Harvard

Keats J., . (1927). The poetical works of John Keats. Londres (Inglaterra): Oxford University Press.

MLA

Keats John, . The poetical works of John Keats. Londres (Inglaterra): Oxford University Press. 1927.