Cita APA (7a ed.)
Graham, D. Y., Evans Jr., D. J., Alpert, L. C., Klein, P. D., Evans, D. G., Opekun, A. R., . . . Boutton, T. W. (1987). Campylobacter pylori detected noninvasively by the 13C-urea breath test. Lancet, 1(8543), 1174-1178.
Cita Chicago Style (17a ed.)
Graham, David Y., et al. "Campylobacter Pylori Detected Noninvasively by the 13C-urea Breath Test." Lancet 1, no. 8543 (1987): 1174-1178.
Cita MLA (9a ed.)
Graham, David Y., et al. "Campylobacter Pylori Detected Noninvasively by the 13C-urea Breath Test." Lancet, vol. 1, no. 8543, 1987, pp. 1174-1178.
Precaución: Estas citas no son 100% exactas.