Cita APA (7th ed.)

(1979). The encyclopedia of soil science. Dowden, Hutchinson & Ross.

Cita Chicago (17th ed.)

The Encyclopedia of Soil Science. Strouds- burg, Penn.: Dowden, Hutchinson & Ross, 1979.

Cita MLA (9th ed.)

The Encyclopedia of Soil Science. Dowden, Hutchinson & Ross, 1979.