Sumarto, E. P., E. Wiratmani, and F. Fatoni. “Analysis and Evaluation of Productivity Using the Marvin E. Mundel Method and the Productivity Evaluation Tree (PET) at PT. YZ”. Jurnal Teknologi Dan Manajemen, vol. 22, no. 1, Feb. 2024, pp. 15-26, doi:10.52330/jtm.v22i1.184.