APA (7th ed.) Citation

Project Gutenberg & Nietzsche, F. W. (2005). Also sprach Zarathustra. Project Gutenberg Literary Archive Foundation.

Chicago Style (17th ed.) Citation

Project Gutenberg and Friedrich Wilhelm Nietzsche. Also Sprach Zarathustra. Salt Lake City: Project Gutenberg Literary Archive Foundation, 2005.

MLA (9th ed.) Citation

Project Gutenberg and Friedrich Wilhelm Nietzsche. Also Sprach Zarathustra. Project Gutenberg Literary Archive Foundation, 2005.

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