APA (7th ed.) Citation

Pius II, p., & Castro Zafra, A. (1980). Así fui Papa. Argos Vergara.

Chicago Style (17th ed.) Citation

Pius II, papa, and Antonio Castro Zafra. Así Fui Papa. Barcelona: Argos Vergara, 1980.

MLA (9th ed.) Citation

Pius II, papa, and Antonio Castro Zafra. Así Fui Papa. Argos Vergara, 1980.

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