APA (7th ed.) Citation

Blázquez, F., Baldomero, M., & Martínez, G. (1991). Juan XXIII. Rueda.

Chicago Style (17th ed.) Citation

Blázquez, Feliciano, Manuel Baldomero, and Gloria Martínez. Juan XXIII. Barcelona: Rueda, 1991.

MLA (9th ed.) Citation

Blázquez, Feliciano, et al. Juan XXIII. Rueda, 1991.