Marbun, Ivana Sinatra, and Reina Adelina Sipahutar. 2016. “The Correlation Between Motivation and Students’ Achievement in Reading Comprehension at SMP Negeri 8 Grade VIII Pematangsiantar”. Journal of English Teaching As a Foreign Language 2 (1):27-38. https://ejournal.uhn.ac.id/index.php/jetafl/article/view/159.