APA (7th ed.) Citation

Ratzinger, J., & Sicre, J. L. (1967). Ser cristiano. Sígueme.

Chicago Style (17th ed.) Citation

Ratzinger, Joseph, and José Luis Sicre. Ser Cristiano. Salamanca: Sígueme, 1967.

MLA (9th ed.) Citation

Ratzinger, Joseph, and José Luis Sicre. Ser Cristiano. Sígueme, 1967.

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