appropriate source keyword descriptive student wa research academic ABSTRACT qualitative categorized syllable 2014 published length 2123121012 pendidikan dan inggri data instrument conclusion seven flesch state textbook bahasa variou term university number their therefore thesi entitled sentence majoring researcher word aimed kebudayaan registration text per medan program 2019 kincaid readability grade educational they tested study own english determine whether 2018 count kementerian focuse find year average genre because level them used vocational marbun reading take school read tenth out not dube high