source
source (fuente)
the person, group, document or study that information or evidence comes from.
Example
According to the state health department, flu cases doubled. (The source is the health department.)
In Spanish
source (fuente) — la persona, el grupo, el documento o el estudio de donde viene la información o la evidencia.
According to the state health department, flu cases doubled. (La fuente es el departamento de salud.)