“IMPLEMENTASI REWARD DAN PUNISHMENT TERHADAP PENINGKATAN KOSA KATA BAHASA INGGRIS DI BINTANA RESEARCH AND LITERACY SHELTER INDONESIA: Reward And Punishment Implementation For Improving English Vocabulary In Bintana Research And Literacy Shelter Indonesia”. 2021. Fenomena 20 (2): 233-48. https://doi.org/10.35719/fenomena.v20i2.62.