McNamara, A. (2013). Step back in time. Sphere.
Cita Chicago (17th ed.)McNamara, Ali. Step Back in Time. London: Sphere, 2013.
Cita MLA (8th ed.)McNamara, Ali. Step Back in Time. Sphere, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)