Anggraini W, Reflinda R, Melani M, Irwandi I. An Error Analysis of Prepositional of Collocation in Thesis of English Education Department IAIN Bukittinggi. alsys [Internet]. 1May2023 [cited 4Jul.2024];3(3):212-27. Available from: https://ejournal.yasin-alsys.org/index.php/alsys/article/view/1043