United States. Environmental Protection Agency & United States. Environmental Response Team. (1980). Introduction to ground water investigation. EPA.
Citazione stile Chigago Style (17a edizione)United States. Environmental Protection Agency e United States. Environmental Response Team. Introduction to Ground Water Investigation. [Washington, D.C.]: EPA, 1980.
Citatione MLA (8a ed.)United States. Environmental Protection Agency e United States. Environmental Response Team. Introduction to Ground Water Investigation. EPA, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.