Friend, D. J. (1996). Remediation of petroleum-contaminated soils. National Academy Press.
Lua i Stíl Chicago (17ú heag.)Friend, David J. Remediation of Petroleum-contaminated Soils. Washington, D.C: National Academy Press, 1996.
Lua MLA (9ú heag.)Friend, David J. Remediation of Petroleum-contaminated Soils. National Academy Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.