APA aipamena

McNamara, A. (2013). Step back in time. Sphere.

Chicago Style aipamena

McNamara, Ali. Step Back in Time. London: Sphere, 2013.

MLA aipamena

McNamara, Ali. Step Back in Time. Sphere, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.