APA

National Cancer Institute (U.S.), . (1973). Mammary nodules in dogs during four year treatment with megestrol acetate or chlormadinone acetate. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 1973. Mammary nodules in dogs during four year treatment with megestrol acetate or chlormadinone acetate. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (1973). Mammary nodules in dogs during four year treatment with megestrol acetate or chlormadinone acetate. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Mammary nodules in dogs during four year treatment with megestrol acetate or chlormadinone acetate. [Washington, D.C: . 1973.