NASUTION, R. S. A.; LINIARTI, S.; PUTRA, M. U. M. Simple Booking Training for Micro Small and Medium Businesses in Deli Serdang Regency, Tanjung Morawa District-A Bangun Rejo Village. Enrichment : Journal of Management, v. 12, n. 2, p. 1580-1583, 3 Apr. 2022.