Cita APA (7th ed.)

Schnitzer, M., & Khan, S. U. M. (1978). Soil organic matter. Elsevier Scientific.

Cita Chicago (17th ed.)

Schnitzer, M., i Shahed U. M. Khan. Soil Organic Matter. Amsterdam: Elsevier Scientific, 1978.

Cita MLA (9th ed.)

Schnitzer, M., i Shahed U. M. Khan. Soil Organic Matter. Elsevier Scientific, 1978.