APA (7th ed.) Citation

Wiedemann, J., Portillo, M., Barberi, M., & Guerra Rita. (2009). Web design navigation. Taschen.

Chicago Style (17th ed.) Citation

Wiedemann, Julius, Marco Portillo, Marco Barberi, and Guerra Rita. Web Design Navigation. Köln: Taschen, 2009.

MLA (9th ed.) Citation

Wiedemann, Julius, et al. Web Design Navigation. Taschen, 2009.