Wahyuni, I. and Jarum, J. 2017. An Investigation on Team Teaching Implemented by Local and Foreign Teachers in Teaching English at SMAN 1 Ketapang Sampang. Celtic : A Journal of Culture, English Language Teaching, Literature and Linguistics. 1, 2 (Aug. 2017), 31–40. DOI:https://doi.org/10.22219/celtic.v1i2.4664.