APA-Zitierstil (7. Ausg.)

Becher, G. (1994). Special issue on the humex project and humic substances. Pergamon.

Chicago-Zitierstil (17. Ausg.)

Becher, Georg. Special Issue on the Humex Project and Humic Substances. New York <<[u.a.]>>: Pergamon, 1994.

MLA-Zitierstil (9. Ausg.)

Becher, Georg. Special Issue on the Humex Project and Humic Substances. Pergamon, 1994.