APA (7th ed.) Citation

Gane, L., Piero, & Appignanesi, R. (2005). Introducing Nietzsche. Icon Books.

Chicago Style (17th ed.) Citation

Gane, Laurence, Piero, and Richard Appignanesi. Introducing Nietzsche. [London]: Icon Books, 2005.

MLA (9th ed.) Citation

Gane, Laurence, et al. Introducing Nietzsche. Icon Books, 2005.