The MapBiomas data are public, open and free through license Creative Commons CC-CY-SA and the simple reference of the source observing the following format:
"Project MapBiomas - Collection [version] of Brazilian Land Cover & Use Map Series, accessed on [date] through the link: [LINK]"
"MapBiomas Project - is a multi-institutional initiative to generate annual land cover and use maps using automatic classification processes applied to satellite images. The complete description of the project can be found at http://mapbiomas.org".
Access here the scientific publication: Souza at. al. (2020) - Reconstructing Three Decades of Land Use and Land Cover Changes in Brazilian Biomes with Landsat Archive and Earth Engine - Remote Sensing, Volume 12, Issue 17, 10.3390/rs12172735.