Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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