APA (7th ed.) Citation

Friis, R. H. (2007). Essentials of environmental health. Jones and Barlett Pub.

Chicago Style (17th ed.) Citation

Friis, Robert H. Essentials of Environmental Health. Sudbury, MA: Jones and Barlett Pub, 2007.

MLA (9th ed.) Citation

Friis, Robert H. Essentials of Environmental Health. Jones and Barlett Pub, 2007.