Suyoto, Yohanes Totok, Teguh Prasetio, Hastuti Naibaho, and Sumedi . 2019. “The Impact of Motivation on Proactive Behavior in the Perspective of Self-Determination Theory ”. KnE Social Sciences 3 (26), 229–242. https://doi.org/10.18502/kss.v3i26.5376.