Purba, R. . and Butar-butar, L. E. (2020) “Improving Students’ Achievement on Writing Procedure Text by Using Group Investigation Strategy at SMK Sandhy Putra Medan”, Journal of Maritime and Education (JME), 2(1), pp. 99-102. Available at: https://ejournal.poltek-amimedan.ac.id/index.php/jme/article/view/20 (Accessed: 12October2026).