APA (7th ed.) Citation

SpringerLink (Online service), Zimmermann, A., & Perilongo, G. (2011). Pediatric liver tumors. Springer eBooks..

Chicago Style (17th ed.) Citation

SpringerLink (Online service), Arthur Zimmermann, and Giorgio Perilongo. "Pediatric Liver Tumors." Springer EBooks. 2011.

MLA (9th ed.) Citation

SpringerLink (Online service), et al. "Pediatric Liver Tumors." Springer EBooks., 2011.