Muslim, N.R. and Oleh, O. 2022. Analisis Perhitungan Stroke Per Hour (SPH) produk cross Tube pada PT. Masbi Sukses. Patria Artha Technological Journal. 6, 2 (Jan. 2022), 133–138. DOI:https://doi.org/10.33857/patj.v6i2.546.