APA (7th ed.) Citation

Frerichs, H., & Gras, B. (2001). Coplanare PCB in Hamburger Böden.

Chicago Style (17th ed.) Citation

Frerichs, Heike, and Birgit Gras. Coplanare PCB in Hamburger Böden. Hamburg, 2001.

MLA (8th ed.) Citation

Frerichs, Heike, and Birgit Gras. Coplanare PCB in Hamburger Böden. 2001.

Warning: These citations may not always be 100% accurate.