APA

National Cancer Institute (U.S.), . (1973). Objective 1, develop means to reduce effectiveness of external agents for producing cancer. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 1973. Objective 1, develop means to reduce effectiveness of external agents for producing cancer. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (1973). Objective 1, develop means to reduce effectiveness of external agents for producing cancer. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Objective 1, develop means to reduce effectiveness of external agents for producing cancer. [Washington, D.C: . 1973.