T. H. Panjaitan, E. D. Surya, and K. F. Ferine, “The Influence of Relationship Marketing and E-WOM on The Decision to Pay Taxes Through Commitments to Taxpayers Registered at the Service Office Lubuk Pakam Primary Tax”, J. Manag. Econ. Account., vol. 5, no. 4, pp. 2697–2708, Oct. 2026.