APA
Rickham P. P., . (19780000). Ulcerative dolitis and crohns disease and ther diseases of the alimentary system in childhood. Baltimore, us: Urban y Schwarzenberg.
Chicago
Rickham Peter Paul, . 19780000. Ulcerative dolitis and crohns disease and ther diseases of the alimentary system in childhood. Baltimore, us: Urban y Schwarzenberg.
Harvard
Rickham P. P., . (19780000). Ulcerative dolitis and crohns disease and ther diseases of the alimentary system in childhood. Baltimore, us: Urban y Schwarzenberg.
MLA
Rickham Peter Paul, . Ulcerative dolitis and crohns disease and ther diseases of the alimentary system in childhood. Baltimore, us: Urban y Schwarzenberg. 19780000.