Trisnantasari, I., Rachmajanti, S. and Mukminatien, N. 2017. DEVELOPING A COMMUNICATIVE SUPPLEMENTARY SPEAKING E-BOOK FOR JUNIOR HIGH SCHOOL TEACHERS. LET: Linguistics, Literature and English Teaching Journal. 5, 1 (May 2017), 19–25. DOI:https://doi.org/10.18592/let.v5i1.1420.