Della Ocksania
Fakultas Ilmu Administrasi Universitas Indonesia, 2015
UI - Skripsi (Membership)
Sri Rejeki
Rekayasa Sains, 2020
Buku Teks
Siti Zubaedah
Universitas Indonesia, 2009
UI - Skripsi (Open)
United States Department of Labor occupational safety and health Administration
OSHA, 2004
Buku Teks
Sumamur P. K.
Departemen Kesehatan, 1987
Buku Teks