APA (7th ed.) Citation

Guardini, R. (1966). Johanneische Botschaft: Romano Guardini. Herder.

Chicago Style (17th ed.) Citation

Guardini, Romano. Johanneische Botschaft: Romano Guardini. Freiburg: Herder, 1966.

MLA (8th ed.) Citation

Guardini, Romano. Johanneische Botschaft: Romano Guardini. Herder, 1966.

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