Wulandari, Widya ., Berlin . Sibarani, and Anni Holila Pulungan. 2021. “CULTURE AND INTERLANGUAGE STAGES EFFECT ON EFL STUDENTS™ POLITENESS IN REFUSALS”. LINGUISTIK TERAPAN 18 (2):166-71. https://doi.org/10.24114/lt.v18i2.27895.