Midgley, Mary, author
Routledge , 1995
Buku Teks
Chisholm, Roderick M., author
Prentice Hall International, 1989
Buku Teks
Dicker, Georges, author
Oxford University Press , 2004
Buku Teks
Simatupang, Lidia, author
Fakultas Ilmu Keperawatan Universitas Indonesia, 2014
UI - Skripsi (Membership)
Azzouni, Jody, author
Routledge, 2000
Buku Teks