APA
Robert E. Wittes, . (1988). Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
Chicago
Robert E. Wittes, . 1988. Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
Harvard
Robert E. Wittes, . (1988). Journal of the National Cancer Institute. U.S.A: National Institutes of Health.
MLA
Robert E. Wittes, . Journal of the National Cancer Institute. U.S.A: National Institutes of Health. 1988.