Cita APA (7a ed.)

Keats, J., & Forman, M. B. (1960). The letters of John Keats (4th ed. with revisions and additional letters.). Oxford University Press.

Cita Chicago Style (17a ed.)

Keats, John, y Maurice Buxton Forman. The Letters of John Keats. 4th ed. with revisions and additional letters. London [etc.]: Oxford University Press, 1960.

Cita MLA (9a ed.)

Keats, John, y Maurice Buxton Forman. The Letters of John Keats. 4th ed. with revisions and additional letters. Oxford University Press, 1960.