Newell, Kenneth W.
World Health Organization, 1975
Buku Teks
Peter Aggleton, Jane Hurry, Ian Warwick, editor
John Wiley & Sons, 2000
Buku Teks
Taty Hernawaty
Fakultas Ilmu Keperawatan Universitas Indonesia, 2020
Artikel Jurnal
Carney, Jan K.
Jones Bartlett Learning, 2016
Buku Teks
edited by Robyn Martin and Linda Johnson
Cavendish, 2001
Buku Teks