Marcus, Dawn A.
Springer, 2012
eBooks
Edwards, David
Sage Publication, 2004, 2004
Buku Teks SO
Maria Kurnyata Rante Kada
Fakultas Ilmu Keperawatan Universitas Indonesia, 2018
UI - Tesis Membership
edited by Diane Elizabeth Waller and Andrea Gilroy
Open University Press, 1992
Buku Referensi
Daniel D. Karp, editor
Wolters Kluwer, 2015
Buku Teks SO