APA (7th ed.) Citation

Knovel (Firm), Grellmann, W., & Seidler, S. (2007). Polymer testing. Hanser.

Chicago Style (17th ed.) Citation

Knovel (Firm), Wolfgang Grellmann, and Sabine Seidler. Polymer Testing. Cincinnati, Ohio: Hanser, 2007.

MLA (9th ed.) Citation

Knovel (Firm), et al. Polymer Testing. Hanser, 2007.