Hidayat, W. 2023. The Employees Perception Analysis toward The Operational Expectation and Reality based on Ishikawa and Spider Plot Methods at PT. Tata Makmur Bersama – Sidoarjo ,Indonesia. Sigmagri. 3, 1 (Aug. 2023), 21-29. DOI:https://doi.org/10.32764/sigmagri.v3i01.904.