Hidayat WGP. 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; Res. J. Soc. Agric. Policies, Econ. Agribus. [Internet]. 2023 Aug. 5 [cited 2026 Jan. 16];3(1):21-9. Available from: http://ojs.unwaha.ac.id/index.php/sigmagri/article/view/904