APA aipamena

Manuel, J. (2010). MINING: EPA Tackles Fracking. National Institute of Environmental Health Sciences.

Chicago Style aipamena

Manuel, John. MINING: EPA Tackles Fracking. National Institute of Environmental Health Sciences, 2010.

MLA aipamena

Manuel, John. MINING: EPA Tackles Fracking. National Institute of Environmental Health Sciences, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.