APA (7th ed.) Citation

Romero, E. (1973). Cartas al rey. Planeta.

Chicago Style (17th ed.) Citation

Romero, Emilio. Cartas Al Rey. Barcelona: Planeta, 1973.

MLA (9th ed.) Citation

Romero, Emilio. Cartas Al Rey. Planeta, 1973.

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