APA (7th ed.) Citation

Friis, R. H. (2015). Occupational health and safety for the 21st century. Jones & Bartlett Learning.

Chicago Style (17th ed.) Citation

Friis, Robert H. Occupational Health and Safety for the 21st Century. Burlington, Massachusetts: Jones & Bartlett Learning, 2015.

MLA (9th ed.) Citation

Friis, Robert H. Occupational Health and Safety for the 21st Century. Jones & Bartlett Learning, 2015.