Mustafa Emre CİVELEK, Murat ÇEMBERCİ, Fatma Serab ONURSAL, Mustafa Emre CİVELEK, Nagehan UCA, Okşan KİBRİTCİ ARTAR. ANALYSIS OF BUSINESS POSITIONS REQUIRING PROFESSIONAL COMPETENCE CERTIFICATES IN CIVIL AVIATION. IJOESS [Internet]. 2017 Jun. 1 [cited 2025 May 18];8(27):680-712. Available from: https://rrpubs.com/index.php/ijoess/article/view/914