APA (7th ed.) Citation

SpringerLink (Online service), Schlag, G., & Wayand, W. (1995). Endoscopy. Springer-Verlag.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), Günther Schlag, and W. Wayand. Endoscopy. Berlin ; New York: Springer-Verlag, 1995.

MLA (9th ed.) Citation

SpringerLink (Online service), et al. Endoscopy. Springer-Verlag, 1995.