APA
Peter Greenwald, . (1980). Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
Chicago
Peter Greenwald, . 1980. Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
Harvard
Peter Greenwald, . (1980). Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
MLA
Peter Greenwald, . Journal of the National Cancer Institute. U.S.A: National Institutes of Health. 1980.