APA (7th ed.) Zitazioa

Nietzsche, F. (1969). Selected letters of Friedrich Nietzsche. University of Chicago.

Chicago Style (17th ed.) Zitazioa

Nietzsche, Friedrich. Selected Letters of Friedrich Nietzsche. Chicago: University of Chicago, 1969.

MLA (9th ed.) Zitazioa

Nietzsche, Friedrich. Selected Letters of Friedrich Nietzsche. University of Chicago, 1969.