APA (7th ed.) Citation

WorldWater & World Health Organization. (1984). The International Drinking Water Supply and Sanitation Decade Directory (2nd ed.). WorldWater.

Chicago Style (17th ed.) Citation

WorldWater and World Health Organization. The International Drinking Water Supply and Sanitation Decade Directory. 2nd ed. [London?]: WorldWater, 1984.

MLA (9th ed.) Citation

WorldWater and World Health Organization. The International Drinking Water Supply and Sanitation Decade Directory. 2nd ed. WorldWater, 1984.