APA (7th ed.) Citation

Shama, G., & Ahlfield, B. (2012). Contamination.

Chicago Style (17th ed.) Citation

Shama, Gilbert, and Birte Ahlfield. Contamination. 2012.

MLA (9th ed.) Citation

Shama, Gilbert, and Birte Ahlfield. Contamination. 2012.

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