Phillips, J. (1971). Environmental health: A paradox of progress. W. C. Brown.
Lua i Stíl Chicago (17ú heag.)Phillips, John. Environmental Health: A Paradox of Progress. Dubuque, IO: W. C. Brown, 1971.
Lua MLA (9ú heag.)Phillips, John. Environmental Health: A Paradox of Progress. W. C. Brown, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.