Cahyadi A, Kristiyanto A, Raharjo HP, Akhiruyanto A, Setyawati H, Hidayah T. Article RETRACTED due to malpractice Model Collaboration of Pentahelix in Sports Industry Development in Lampung Province. Retos [Internet]. 2026 Sep. 1 [cited 2026 Sep. 2];82. Available from: https://www.revistaretos.org/index.php/retos/article/view/119769