APA aipamena

Dortignac, E. (1956). Watershed resources and problems of the upper Rio Grande Basin. United States Department of Agriculture.

Chicago Style aipamena

Dortignac, E.J. Watershed Resources and Problems of the Upper Rio Grande Basin. U.S.: United States Department of Agriculture, 1956.

MLA aipamena

Dortignac, E.J. Watershed Resources and Problems of the Upper Rio Grande Basin. United States Department of Agriculture, 1956.