APA (7th ed.) Citation

Graf, F. W. (1991). Ernst Troeltschs Briefe an Heinrich Rickert.

Chicago Style (17th ed.) Citation

Graf, Friedrich Wilhelm. Ernst Troeltschs Briefe an Heinrich Rickert. 1991.

MLA (9th ed.) Citation

Graf, Friedrich Wilhelm. Ernst Troeltschs Briefe an Heinrich Rickert. 1991.

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