APA

National Cancer Institute (U.S.), . (1973). Effect of chronic cyclophosphamide and methotrexate treatment on skin allograft survival in mice and rats. [Washington, D.C: .

Chicago

National Cancer Institute (U.S.), . 1973. Effect of chronic cyclophosphamide and methotrexate treatment on skin allograft survival in mice and rats. [Washington, D.C: .

Harvard

National Cancer Institute (U.S.), . (1973). Effect of chronic cyclophosphamide and methotrexate treatment on skin allograft survival in mice and rats. [Washington, D.C: .

MLA

National Cancer Institute (U.S.), . Effect of chronic cyclophosphamide and methotrexate treatment on skin allograft survival in mice and rats. [Washington, D.C: . 1973.