APA (7th ed.) Citation

Keats, J. (1947). Cartas de John Keats (1a ed.). Juventud.

Chicago Style (17th ed.) Citation

Keats, John. Cartas De John Keats. 1a ed. Barcelona: Juventud, 1947.

MLA (8th ed.) Citation

Keats, John. Cartas De John Keats. 1a ed. Juventud, 1947.

Warning: These citations may not always be 100% accurate.