Sarah Ryan, editor
John Wiley & Sons, 2007
Buku Teks
Johnson, Gordon E., author
W.B Saunders , 1991
Buku Teks
Aschenbrenner, Diane S., author
Lippincott Williams & Wilkins, 2002
Buku Teks
Lippincott , 1999
Buku Teks
foreword by Kathleen Fletcher
Springhouse , 2000
Buku Referensi