APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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