APA (7th ed.) Citation

Heiler, F. (1937). Urkirche unf Ostkirche. Ernst Reinhardt.

Chicago Style (17th ed.) Citation

Heiler, Friedrich. Urkirche Unf Ostkirche. München: Ernst Reinhardt, 1937.

MLA (9th ed.) Citation

Heiler, Friedrich. Urkirche Unf Ostkirche. Ernst Reinhardt, 1937.

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