APA (7th ed.) Citation

Okun, D. A., & Ponghis, G. (1975). Community wastewater collection and disposal / [by] Daniel A. Okun and George Ponghis. World Health Organization.

Chicago Style (17th ed.) Citation

Okun, Daniel A., and George Ponghis. Community Wastewater Collection and Disposal / [by] Daniel A. Okun and George Ponghis. Geneva: World Health Organization, 1975.

MLA (9th ed.) Citation

Okun, Daniel A., and George Ponghis. Community Wastewater Collection and Disposal / [by] Daniel A. Okun and George Ponghis. World Health Organization, 1975.

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