Foster D. Harold. (1992). Health Diseases and the Environment. Balhaven Press.
Chicago Style (17th ed.) ZitazioaFoster D. Harold. Health Diseases and the Environment. London: Balhaven Press, 1992.
MLA (9th ed.) ZitazioaFoster D. Harold. Health Diseases and the Environment. Balhaven Press, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.