Ndu C. Vitalis, Olayinka A. Abiodun, Arukwu C. Maureen, Anthony O. Ude, y Ohunyeye F. Olamide. «Delegation Strategy for Achieving Success of Transport Companies in South-East Nigeria». Opción 360 (mayo 5, 2020): 1766-1783. Accedido agosto 2, 2025. https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/32072.