Irmawanty, I., M. Syarif Sumantri, and M. Jafar. “Lesson Study to Improve Teacher’s Ability in Scientific Publication of Sustainable Profession Development”. Opción, Vol. 35, Aug. 2019, pp. 1004-20, https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/31693.