APA

Hansen H. N., Tompkins C., . (1950). Pensy leafspot, caused by centrospora acerina, host range, and control. : .

Chicago

Hansen H N, Tompkins C.M, . 1950. Pensy leafspot, caused by centrospora acerina, host range, and control. : .

Harvard

Hansen H. N., Tompkins C., . (1950). Pensy leafspot, caused by centrospora acerina, host range, and control. : .

MLA

Hansen H N, Tompkins C.M, . Pensy leafspot, caused by centrospora acerina, host range, and control. : . 1950.