Khairunnisa, K., Ermas Simaremare, Novita Annisah Hasibuan, Girang Stevani Bancin, and Tondang Raja Purba. “Analysis Problems of Geography Teachers in Applying Learning Strategies to Sensing Material Far Away at SMA N 7 Medan”. Jurnal Multidisiplin Sahombu, vol. 4, no. 02, Dec. 2024, pp. 513-21, https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/5900.