Lua APA (7ú heag.)

Hatfield, J. (1994). Soil biology: Effects on soil quality. Lewis Publishers.

Lua i Stíl Chicago (17ú heag.)

Hatfield, J.L. Soil Biology: Effects on Soil Quality. Boca Raton: Lewis Publishers, 1994.

Lua MLA (9ú heag.)

Hatfield, J.L. Soil Biology: Effects on Soil Quality. Lewis Publishers, 1994.

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