OSTLER, N. K. Environmental regulations overview. Volume 2#Editor Neal K. Ostler, John T. Nielsen. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)OSTLER, Neal K. Environmental Regulations Overview. Volume 2#Editor Neal K. Ostler, John T. Nielsen. Prentice Hall.
Lua MLA (8ú heag.)OSTLER, Neal K. Environmental Regulations Overview. Volume 2#Editor Neal K. Ostler, John T. Nielsen. Prentice Hall.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.