Ellis, S. (1995). Soils and environment. Routledge.
Chicago Style (17th ed.) ZitazioaEllis, S. Soils and Environment. London: Routledge, 1995.
MLA (9th ed.) ZitazioaEllis, S. Soils and Environment. Routledge, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.