APA (7th ed.) Citation

Keats, J., Vázquez de Castro, C., & Traversi, D. A. (1947). Cartas de John Keats (1a ed.). Juventud.

Chicago Style (17th ed.) Citation

Keats, John, Concepción Vázquez de Castro, and Derek Antona Traversi. Cartas De John Keats. 1a ed. Barcelona: Juventud, 1947.

MLA (9th ed.) Citation

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