Briefe:

MLA

Nietzsche, Friedrich Wilhelm, Giorgio Colli, and Mazzino Montinari. Briefe. Berlin: de Gruyter, 1980.

APA

Nietzsche, F. Wilhelm, Colli, G., & Montinari, M. (1980). Briefe. Berlin: de Gruyter.

Chicago

Nietzsche, Friedrich Wilhelm, Giorgio Colli, and Mazzino Montinari. Briefe:. Vols. 5-6/ii. Berlin: de Gruyter, 1980.