APA (7th ed.) Citation

Ognianik, N. S., Paramonova, N. K., & Shpak, O. M. (2011). Subsurface contamination with petroleum products is a threat to groundwater quality.

Chicago Style (17th ed.) Citation

Ognianik, N. S., N. K. Paramonova, and O. M. Shpak. Subsurface Contamination with Petroleum Products Is a Threat to Groundwater Quality. 2011.

MLA (8th ed.) Citation

Ognianik, N. S., et al. Subsurface Contamination with Petroleum Products Is a Threat to Groundwater Quality. 2011.

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