APA Citation

Fries, H. 1. (1971). Un reto a la fe. Salamanca: Sígueme.

Chicago Style Citation

Fries, Heinrich 1911-1998. Un Reto a La Fe. Salamanca: Sígueme, 1971.

MLA Citation

Fries, Heinrich 1911-1998. Un Reto a La Fe. Salamanca: Sígueme, 1971.

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