Sinurat, L. S., and Herta Manurung. “The Influence of Organizational Culture on Employee Work Performance at the Doloksanggul Sub-District Office, Humbang Hasundutan Regency”. Jurnal Mantik, vol. 4, no. 4, Feb. 2021, pp. 2522-6, doi:10.35335/mantik.Vol4.2021.1203.pp2522-2526.