APA (7th ed.) Citation

Guardini, R. (1964). Cartas sobre autoformacion (5a ed.). Dinor.

Chicago Style (17th ed.) Citation

Guardini, Romano. Cartas Sobre Autoformacion. 5a ed. San Sebastian: Dinor, 1964.

MLA (9th ed.) Citation

Guardini, Romano. Cartas Sobre Autoformacion. 5a ed. Dinor, 1964.

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