APA (7th ed.) Citation

Ratzinger, J. (1971). Introducciðn al cristianismo (2“ ed.). Sgueme.

Chicago Style (17th ed.) Citation

Ratzinger, Joseph. Introducciðn Al Cristianismo. 2“ ed. Salamanca: Sgueme, 1971.

MLA (9th ed.) Citation

Ratzinger, Joseph. Introducciðn Al Cristianismo. 2“ ed. Sgueme, 1971.

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