Cita APA

STEVENSON, F. Humus chemistry genesis, composition, reactions. New York.

Citación estilo Chicago

STEVENSON, F.J. Humus Chemistry Genesis, Composition, Reactions. New York.

Cita MLA

STEVENSON, F.J. Humus Chemistry Genesis, Composition, Reactions. New York.

Warning: These citations may not always be 100% accurate.