Abstract
The purpose of this article is to characterize Venezuelan scientific production in three data sources: Scopus, Redalyc and SciELO, conducting a comparative analysis of the possibilities that each tool offers for this kind of measurements. Documentary research techniques were used, as well as bibliometric techniques to select indicators and data analysis. Results show that Scopus is the source data with the most representation of Venezuelan production; during the process, it was seen that the different data sources behave very differently and that there are also weaknesses and inconsistencies, warranting thorough normalizations and reviews when performing measurement studies of scientific production with these resources