ANDI, A.; WIBOWO, koento danny; PRASETYA, A. ANALISA PRODUKTIFITAS PEKERJA DENGAN METODE WORK SAMPLING STUDI KASUS PADA PROYEK X DAN Y. Civil Engineering Dimension, [S. l.], v. 6, n. 2, p. pp. 72-79, 2004. DOI: 10.9744/ced.6.2.pp. 72-79. Disponível em: https://ced.petra.ac.id/index.php/civ/article/view/16114. Acesso em: 3 feb. 2023.