Barnett, V., Turkman, K. F., Commission of the European Communities, & SPRUCE Conference. (1994). Statistics for the environment: Water related issues. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Barnett, Vic, K. Feridum Turkman, Commission of the European Communities, agus SPRUCE Conference. Statistics for the Environment: Water Related Issues. Chichester: John Wiley & Sons, 1994.
Lua MLA (9ú heag.)Barnett, Vic, et al. Statistics for the Environment: Water Related Issues. John Wiley & Sons, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.