S. E. . Penu, N. Liando, and . A. . Rettob, “The READABILITY LEVEL OF READING TEXTS IN THE ENGLISH TEXT BOOK ENTITLED ‘BAHASA DAN SASTRA INGGRIS SMA/MA’ FOR GRADE X SEMESTER 1”, kompetensi, vol. 1, no. 05, pp. 523-531, Dec. 2022.