MapBiomas Peru data are public and free, you can make use of them by simply referring to the source with the following format: 

“MapBiomas Peru Project - Collection [number] of the Annual Land Cover and Land Use Series for Peru, acquired [date] through the link: [LINK]”

"MapBiomas Peru Project - is an initiative of the Instituto del Bien Común (IBC) with the multi-institutional co-creation of RAISG to generate annual cover and land use maps from automatic classification processes applied to satellite images." The full description of the project can be found at http://peru.mapbiomas.org“