APA

National Institutes of Health (U.S.), . (19). Adjuvant chemotherapy of breast cancer. [Washington, D.C: .

Chicago

National Institutes of Health (U.S.), . 19. Adjuvant chemotherapy of breast cancer. [Washington, D.C: .

Harvard

National Institutes of Health (U.S.), . (19). Adjuvant chemotherapy of breast cancer. [Washington, D.C: .

MLA

National Institutes of Health (U.S.), . Adjuvant chemotherapy of breast cancer. [Washington, D.C: . 19.