APA

Calabuig Sánchez M., Ramos Espada J. M., . (20030206). [Practice guidelines in gastroenterology (VIII). Upper gastrointestinal hemorrhage and lower gastrointestinal hemorrhage. Spanish Society of Gastroenterology, Hepatology and Pediatric Nutrition]. : Anales espanoles de pediatria.

Chicago

Calabuig Sánchez M, Ramos Espada J M, . 20030206. [Practice guidelines in gastroenterology (VIII). Upper gastrointestinal hemorrhage and lower gastrointestinal hemorrhage. Spanish Society of Gastroenterology, Hepatology and Pediatric Nutrition]. : Anales espanoles de pediatria.

Harvard

Calabuig Sánchez M., Ramos Espada J. M., . (20030206). [Practice guidelines in gastroenterology (VIII). Upper gastrointestinal hemorrhage and lower gastrointestinal hemorrhage. Spanish Society of Gastroenterology, Hepatology and Pediatric Nutrition]. : Anales espanoles de pediatria.

MLA

Calabuig Sánchez M, Ramos Espada J M, . [Practice guidelines in gastroenterology (VIII). Upper gastrointestinal hemorrhage and lower gastrointestinal hemorrhage. Spanish Society of Gastroenterology, Hepatology and Pediatric Nutrition]. : Anales espanoles de pediatria. 20030206.