Walker, W. A. (2004). Pediatric gastrointestinal disease, Fourth edition. BC Decker Inc.
Chicago-Zitierstil (17. Ausg.)Walker, W. Allan. Pediatric Gastrointestinal Disease, Fourth Edition. Hamilton, Ontario: BC Decker Inc, 2004.
MLA-Zitierstil (8. Ausg.)Walker, W. Allan. Pediatric Gastrointestinal Disease, Fourth Edition. BC Decker Inc, 2004.
警告：這些引文格式不一定是100％准確.