Maulana, H. ., Wibisono, C. ., & Sarmini , S. . (2025). The influence of communication, teamwork and culture on employee performance at Riau Islands Province regional procurement bureau with self-efficacy as intervening variables. Global Academy of Multidisciplinary Studies, 1(2), 115–139. https://doi.org/10.35912/gams.v1i2.3466