http://repository.uhamka.ac.id/id/eprint/15199/ Strategi Promosi Universitas Muhammadiyah Prof. Dr. HAMKA di Masa Pandemi Covid-19 Aulia, Anisa http://repository.uhamka.ac.id/id/eprint/15199/1/FKIP_PENDIDIKAN%20EKONOMI_1601085034_ANISA%20AULIA.pdf Unduh!