McNeill, William H., author
Prentice-Hall, 1990
Buku Referensi
Mavroudi, Elizabeth, author
Routledge, 2016
Buku Teks
Chin, Esther, author
Palgrave Macmillan, 2016
Buku Teks
World Health Organization, 2003
Buku Teks
Campbell, Kenneth L., 1955-, author
Bloomsbury, 2015
Buku Teks