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

"MapBiomas Colombia Project - Collection [version] of annual land cover and land use maps, accessed on [date] through the link: [LINK] " 
"MapBiomas Colombia Project is an initiative of Gaia Amazonas Foundation with multi-institutional co-creation of RAISG and MapBiomas Network to generate annual land cover and land use maps from automatic classification processes applied to satellite images. The full project description can be found at Project