Humaid H, Apriyanto T, Ghazi Satriando Humaid Junior. Relationship of Speed, Reaction and Concentration to the Achievement of Precision Landing of Gliding Athletes DKI Jakarta. GJIK [Internet]. 2021 Jul. 30 [cited 2024 Nov. 22];12(03):10-6. Available from: https://journal.unj.ac.id/unj/index.php/gjik/article/view/21872