@article{landini_bianqui_2014,  title={Socio-demographic profile of different samples of Latin American rural extensionists},  volume={44},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84782014000300030},  DOI={10.1590/S0103-84782014000300030},  number={3},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Landini, Fernando and Bianqui, Vanina},  year={2014},  month={Mar},  pages={575–581} }