Burke, D. M.
E.P. Dutton, 1975
Buku Teks
Birge, John Kingsley
Hartford Seminary Press, 1937
Buku Teks
Bullard, Paddy, author
Cambridge University Press, 2011
eBooks
Asceruc-Todd, Ines, author
Brill, 2015
Buku Teks
Diah Ratnawati, author
Fakultas Ilmu Keperawatan Universitas Indonesia, 2014
UI - Tugas Akhir