Anggie, A., S. Suparmi, and R. Dania. “Content Analysis of English Learning Material for SMK/MAK XI 2013 Curriculum Published by Bumi Aksara”. Lesson Journal: Languange, Applied Linguistics, and Education Journal, vol. 3, no. 2, Dec. 2021, pp. 27-31, doi:10.35134/jlesson.v3i2.15.