Awwal, A.M.M. Anisul, author
Ministry of Health and Family Welfare, 2004
Buku Teks
edited by Louise P. Gallagher, Maryhelen Cole Kreidler
Appleton & Lange, 1987
Buku Teks
Gardner, Mary Sewall, author
Macmillan, 1963
Buku Teks
edited by Greta Thornbory
Wiley Blackwell, 2009
Buku Teks
Freeman, Ruth B., author
W.B. Saunders , 1969
Buku Teks