Lubis, Andri Maruli Tua
Medical Journal of Indonesia, 2005
Artikel Jurnal
edited by Madeleine Mooney and Claire Ireson
John Wiley & Sons, 2009
Buku Teks
Vigorita, Vincent J.
Wolters Kluwer, Lippincott Williams & Wilkins, 2008
Buku Teks
Maher, Ann Butler
W.B. Saunders , 2002
Buku Teks
Powell, Mary
E. & S. Livingstone, 1970
Buku Teks