-. The American journal of Digestive Diseases Volume 9 January, 1942. William R. Warner & Company,INC.
Chicago (17e ed.) Bronvermelding-. The American Journal of Digestive Diseases Volume 9 January, 1942. William R. Warner & Company,INC.
MLA (8e ed.) Bronvermelding-. The American Journal of Digestive Diseases Volume 9 January, 1942. William R. Warner & Company,INC.
Let op: Deze citaties zijn niet altijd 100% accuraat.