APA

National Cancer Institute (U.S.), . (197). Spleen focus-forming virus in friend and rausch leukemia virus preparations. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 197. Spleen focus-forming virus in friend and rausch leukemia virus preparations. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (197). Spleen focus-forming virus in friend and rausch leukemia virus preparations. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Spleen focus-forming virus in friend and rausch leukemia virus preparations. [Washington, D.C: . 197.