Constipation
MLA
Nasseri, Yosef; Duthie, Graeme S.; Bartolo, D.C.C, et al. Constipation. Bethesda, Md: U.S. Department of Health and Human Services, National Institutes of Health, National Cancer Insititute, 2012.
APA
Nasseri, D., Duthie, G., Duthie, G. S, Wexner, S. D, & Bartolo, D. C. C. (2012). Constipation. Bethesda, Md: U.S. Department of Health and Human Services, National Institutes of Health, National Cancer Insititute.
Chicago
Nasseri, Yosef; Duthie, Graeme S.; Bartolo, D.C.C, Graeme Duthie, Graeme S Duthie, Steven D Wexner, and D. C. C Bartolo. Constipation. Bethesda, Md: U.S. Department of Health and Human Services, National Institutes of Health, National Cancer Insititute, 2012.