APA (7th ed.) Citation

World Health Organization. Guidelines for drinking-water quality , fourth edition incorporating the first addendum.

Chicago Style (17th ed.) Citation

World Health Organization. Guidelines for Drinking-water Quality , Fourth Edition Incorporating the First Addendum.

MLA (9th ed.) Citation

World Health Organization. Guidelines for Drinking-water Quality , Fourth Edition Incorporating the First Addendum.

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