Cita APA (7a ed.)

Orlov, D. S. (1985). Humus acids of soils. A.A.Balkema.

Cita Chicago Style (17a ed.)

Orlov, D. S. Humus Acids of Soils. Rotterdam: A.A.Balkema, 1985.

Cita MLA (9a ed.)

Orlov, D. S. Humus Acids of Soils. A.A.Balkema, 1985.