Dr. Hashil Twaibu Abdallah and Dimesh Mawji, “LEGAL CHALLENGES ON THE DISCHARGING OF ADMINISTRATIVE POWERS IN TANZANIA: A CASE STUDY OF TRADE AND SERVICE MARK OFFICE”, Int. J. of Legal. Dev. & Allied Issues., vol. 4, no. 5, pp. 550–565, Oct. 2018, doi: 10.55662/.