Sitopu, M., and A. . Sahputra. “Analysis of the Relationship Between Stress Management and Work Safety for Telecommunication Technicians, Navigation and Aviation Observation at Kualanamu Airport”. Airman: Jurnal Teknik Dan Keselamatan Transportasi, vol. 5, no. 1, June 2022, pp. 116-25, doi:10.46509/ajtk.v5i1.206.