Elcock, Karen, author
Churchill Livingstone, 2011
Buku Teks
Richards, Ann, author
Elsevier, 208
Buku Teks
Edwards, Sharon, author
Elsevier , 2009
Buku Teks
Siviter, Bethann
Bailliere Tindall, 2013
Buku Referensi
Davies, Joanna H., author
Churchill Livingstone, 2001
Buku Teks