Saputra, A. A., & Shofiah, V. (2024). Increasing The Study Interest: The Effectivity of Poster Group Discussion-Sticker Reward (PDG-SR) to Increase The Study Interest in English. PROCEEDING SERIES OF PSYCHOLOGY, 2(1), 365-369. https://psikologi.unair.ac.id/proceeding-series-of-psychology/index.php/psp/article/view/60