American academy of rediatrics , 1997
Buku Teks
Polin, Richard A., author
Elsevier, Saunders, 2014
Buku Teks
Auvenshine, Martha Ann, author
Jones and Bartlett , 1990
Buku Teks
Farrer, Helen
Churchill Livingstone , 1993
Buku Teks
J.B. Lippincott Company, 1990
Buku Teks