APA (7th ed.) Citation

Rootman, I., & Hughes, P. H. (1980). Drug-abuse reporting systems. WHO offset publication.

Chicago Style (17th ed.) Citation

Rootman, Irving, and P. H. Hughes. "Drug-abuse Reporting Systems." WHO Offset Publication 1980.

MLA (9th ed.) Citation

Rootman, Irving, and P. H. Hughes. "Drug-abuse Reporting Systems." WHO Offset Publication, 1980.

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