Citação norma APA

Wagner, S., Gladziwa, U., Gebel, M., Schüler, A., Freise, J., & Schmidt, F. W. (1991). Circadian pattern of intragastric acidity in duodenal ulcer patients: A study of variations in relation to ulcer activity.

Citação norma Chicago

Wagner, S., U. Gladziwa, M. Gebel, A. Schüler, J. Freise, and F W. Schmidt. Circadian Pattern of Intragastric Acidity in Duodenal Ulcer Patients: A Study of Variations in Relation to Ulcer Activity. 1991.

Citação norma MLA

Wagner, S., et al. Circadian Pattern of Intragastric Acidity in Duodenal Ulcer Patients: A Study of Variations in Relation to Ulcer Activity. 1991.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.