Silitonga P, Eriyatno E, Sukandar D, Panjaitan N. Developing the Model of National Qualification Framework: A Case Study for Fifth Level in Tours and Travel Diploma. J.Manaj.Teknol. [Internet]. 2013 Sep. 4 [cited 2025 Nov. 17];12(2). Available from: https://journal.sbm.itb.ac.id/index.php/mantek/article/view/675