Gaya APA

al.], A, L, D, J, [. (2015). Analyzing the Combined Drought Indicator (CDI): Demonstration and Analysis of its Evolution during Spring and Summer 2013-2014. (4 ( 2015 )). : Elsevier.

Gaya MLA

al.], Alfred, L., De, Jager, [et. "Analyzing the Combined Drought Indicator (CDI): Demonstration and Analysis of its Evolution during Spring and Summer 2013-2014.". 4 ( 2015 ) : Elsevier, 2015. e-journal.