@article{gunter_campbell_braga_racilan_souza_2016,  title={Language learning apps or games: an investigation utilizing the RETAIN model},  volume={16},  ISSN={1984-6398},  url={https://doi.org/10.1590/1984-639820168543},  DOI={10.1590/1984-639820168543},  number={2},  journal={Revista Brasileira de Linguística Aplicada},  publisher={Faculdade de Letras - Universidade Federal de Minas Gerais},  author={Gunter, Glenda A. and Campbell, Laurie O. and Braga, Junia and Racilan, Marcos and Souza, Valeska Virgínia S.},  year={2016},  month={Apr},  pages={209–235} }