APA

National Cancer Institute (U.S.), . (1975). Effects of protease inhibitors on focu [sic] formation by murine sarcoma virus. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 1975. Effects of protease inhibitors on focu [sic] formation by murine sarcoma virus. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (1975). Effects of protease inhibitors on focu [sic] formation by murine sarcoma virus. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Effects of protease inhibitors on focu [sic] formation by murine sarcoma virus. [Washington, D.C: . 1975.