Steinitz Carl, Arias Hector, & Shearer Allan. (2003). Alternative Futures for Changing Landscapes: The Upper San Pedro River Basin in Arizona and Sonora (In lần thứ 1.). American: Island Press.
Παραπομπή Chicago StyleSteinitz Carl, Arias Hector, και Shearer Allan. Alternative Futures for Changing Landscapes: The Upper San Pedro River Basin in Arizona and Sonora. In lần thứ 1. American: Island Press, 2003.
Παραπομπή MLASteinitz Carl, Arias Hector, και Shearer Allan. Alternative Futures for Changing Landscapes: The Upper San Pedro River Basin in Arizona and Sonora. In lần thứ 1. American: Island Press, 2003.
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