Cita APA (7a ed.)

Troeltsch, E., Graf, F. W., Haury, H., Seelos, A., & Bending, V. (2013). Briefe I (1884-1894). Walter de Gruyter.

Cita Chicago Style (17a ed.)

Troeltsch, Ernst, Friedrich Wilhelm Graf, Harald Haury, Alexander Seelos, y Volker Bending. Briefe I (1884-1894). Berlin [etc.]: Walter de Gruyter, 2013.

Cita MLA (9a ed.)

Troeltsch, Ernst, et al. Briefe I (1884-1894). Walter de Gruyter, 2013.