MLA

Regine, Giovanni, et al. Contrast-enhanced Ultrasound of the Urinary Tract. Springer Milan, 2013.

APA

Regine, G., Regine, R., Atzori, M., & Fabbri, R. (2013). Contrast-Enhanced Ultrasound of the Urinary Tract. Springer Milan.

Chicago

Regine, Giovanni, Regine, Maurizio Atzori, and Romano Fabbri. Contrast-Enhanced Ultrasound of the Urinary Tract. : Springer Milan, 2013.