APA
John L. Zieler, . (1981). Journal Of The National Cancer Institute. U. S. A: National Institute Of Health.
Chicago
John L. Zieler, . 1981. Journal Of The National Cancer Institute. U. S. A: National Institute Of Health.
Harvard
John L. Zieler, . (1981). Journal Of The National Cancer Institute. U. S. A: National Institute Of Health.
MLA
John L. Zieler, . Journal Of The National Cancer Institute. U. S. A: National Institute Of Health. 1981.