Zidni, Z.F.K.S., Widiarini and Mubarok, T.A. 2023. Developing Vocabulary Digital Pocket Book to Online Business and Marketing (OBM) Students at Vocational High School Level. English Education:Journal of English Teaching and Research. 8, 1 (May 2023), 30–42. DOI:https://doi.org/10.29407/jetar.v8i1.18755.