APA Zitierstil

Soil survey staff. (1990). Keys to soil taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University.

Chicago Zitierstil

Soil survey staff. Keys to Soil Taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University, 1990.

MLA Zitierstil

Soil survey staff. Keys to Soil Taxonomy. Blacksburg, Va: Virginia Polytechnic Institute and State University, 1990.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.