Ramlah R, Baan AB, Gunawan G, Rahmayati R. Efforts to Improve Long Serve Skills in Badminton through the Demonstration Method: Upaya Meningkatkan Keterampilan Servis Panjang dalam Permainan Bulu Tangkis melalui Metode Demonstrasi. ainj [Internet]. 2025Dec.22 [cited 2025Dec.29];6(4):454-61. Available from: http://journal.ainarapress.org/index.php/ainj/article/view/929