APA

National Cancer Institute (U.S.), . (1974). Prenatal induction of newrogenci [sic] tumors in hamster by prefursors [sic] ethylurea and sodium nitrite. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 1974. Prenatal induction of newrogenci [sic] tumors in hamster by prefursors [sic] ethylurea and sodium nitrite. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (1974). Prenatal induction of newrogenci [sic] tumors in hamster by prefursors [sic] ethylurea and sodium nitrite. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Prenatal induction of newrogenci [sic] tumors in hamster by prefursors [sic] ethylurea and sodium nitrite. [Washington, D.C: . 1974.