Wahyuni D.S., Köhler T., Sukardi, Sudira P., Agustini K., Mertayasa I.N.E. 2020. “Revisiting Vocational Teacher Competency Standard: Implications on Performance Assessment”. International Journal of Advanced Science and Technology 29 (04), 2967 -81. http://sersc.org/journals/index.php/IJAST/article/view/23475.