APA (7th ed.) Citation

SpringerLink (Online service), Schomburg, D., & Salzmann, M. (1991). Enzyme handbook. Springer.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), D. Schomburg, and M. Salzmann. Enzyme Handbook. Berlin: Springer, 1991.

MLA (9th ed.) Citation

SpringerLink (Online service), et al. Enzyme Handbook. Springer, 1991.