APA

Snow D. W., . (1966). Moult and the breeding cycle in Darwin's finches. : .

Chicago

Snow D W, . 1966. Moult and the breeding cycle in Darwin's finches. : .

Harvard

Snow D. W., . (1966). Moult and the breeding cycle in Darwin's finches. : .

MLA

Snow D W, . Moult and the breeding cycle in Darwin's finches. : . 1966.