Lua APA (7ú heag.)

(2006). Abstracts. 18th World congress of soil science (July 9-15, 2006, Philadelphia).

Lua i Stíl Chicago (17ú heag.)

Abstracts. 18th World Congress of Soil Science (July 9-15, 2006, Philadelphia). 2006.

Lua MLA (9ú heag.)

Abstracts. 18th World Congress of Soil Science (July 9-15, 2006, Philadelphia). 2006.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.