Welford, R. e. (1996). Corporate environmental management. Universities Press.
Lua i Stíl Chicago (17ú heag.)Welford, Richard ed. Corporate Environmental Management. Hyderabad: Universities Press, 1996.
Lua MLA (9ú heag.)Welford, Richard ed. Corporate Environmental Management. Universities Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.