ebrary, Inc, & Carlsen, W. S. (2004). Watershed dynamics (Teacher ed.). National Science Teachers Association.
Citazione stile Chigago Style (17a edizione)ebrary, Inc, e William S. Carlsen. Watershed Dynamics. Teacher ed. Arlington, Va.: National Science Teachers Association, 2004.
Citatione MLA (9a ed.)ebrary, Inc, e William S. Carlsen. Watershed Dynamics. Teacher ed. National Science Teachers Association, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.