Puri Hutami, author
Fakultas Ilmu Keperawatan Universitas Indonesia, 2010
UI - Tugas Akhir
Univ. of Tennessee
The health and safety dept., 1973
Buku Teks
Reese, Charles D., author
CRC Press, Taylor & Francis Group, 2009
Buku Referensi
Gardenswartz, Lee
Jossey-Bass Publishers, 1998
Buku Teks
Allender, Judith Ann, author
Wolters Kluwer, 2014
Buku Teks