Keith, L. H., & Keith, L. H. (1996). Principles of environmental sampling (2nd ed.). Washington, DC: American Chemical Society.
Παραπομπή Chicago StyleKeith, Lawrence H., and Lawrence H. Keith. Principles of Environmental Sampling. 2nd ed. Washington, DC: American Chemical Society, 1996.
Παραπομπή MLAKeith, Lawrence H., and Lawrence H. Keith. Principles of Environmental Sampling. 2nd ed. Washington, DC: American Chemical Society, 1996.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.