APA (7th ed.) Citation

Tillich, P. (2021). Tillich online. De Gruyter.

Chicago Style (17th ed.) Citation

Tillich, Paul. Tillich Online. Berlin: De Gruyter, 2021.

MLA (9th ed.) Citation

Tillich, Paul. Tillich Online. De Gruyter, 2021.

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