APA-referens

E Grundmann, H Grunze, & S Witte. (1974). Early Gastric Cancer: Current Status of Diagnosis. Berlin.

Chicago-stil citat

E Grundmann, H Grunze, och S Witte. Early Gastric Cancer: Current Status of Diagnosis. Berlin, 1974.

MLA-referens

E Grundmann, et al. Early Gastric Cancer: Current Status of Diagnosis. Berlin, 1974.