APA (7th ed.) Citation

SpringerLink (Online service), Maconi, G., & Porro, G. B. (2007). Ultrasound of the Gastrointestinal Tract. Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), Giovanni Maconi, and Gabriele Bianchi Porro. Ultrasound of the Gastrointestinal Tract. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007.

MLA (8th ed.) Citation

SpringerLink (Online service), et al. Ultrasound of the Gastrointestinal Tract. Springer Berlin Heidelberg, 2007.

Warning: These citations may not always be 100% accurate.