APA (7th ed.) Citation

MacDonald, S., Wells, S., & Fry, R. (1993). The limitations of drug screening in the workplace. International Labour Organization.

Chicago Style (17th ed.) Citation

MacDonald, Scott, Samantha Wells, and Richard Fry. The Limitations of Drug Screening in the Workplace. International Labour Organization, 1993.

MLA (9th ed.) Citation

MacDonald, Scott, et al. The Limitations of Drug Screening in the Workplace. International Labour Organization, 1993.