APA (7th ed.) Citation

SpringerLink (Online service), Castracane, V. D., & Henson, M. C. (2007). Leptin. Springer US.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), V. Daniel Castracane, and Michael C. Henson. Leptin. Boston, MA: Springer US, 2007.

MLA (8th ed.) Citation

SpringerLink (Online service), et al. Leptin. Springer US, 2007.