The MapBiomas data are public, open and free under Creative Commons CC-CY-SA license and by referencing the source observing the following format:
"MapBiomas Chaco Project- Collection [version] of the Annual Series of Land Use and Land Cover Maps of Chaco, accessed on [date] through the link: [LINK]"
"MapBiomas Chaco Project - is a multi-institutional initiative to generate annual land use and land cover maps from automatic classification processes applied to satellite imagery. The full description of the project can be found at http://chaco.mapbiomas.org".
In the case of scientific publications, it is suggested to contact the MapBiomas Chaco team to see if there are already publications in progress on the proposed topic.