APA

Silen W., . (1979). Cope's early diagnosis of the acute abdomen. New York: Oxford University Press.

Chicago

Silen William, . 1979. Cope's early diagnosis of the acute abdomen. New York: Oxford University Press.

Harvard

Silen W., . (1979). Cope's early diagnosis of the acute abdomen. New York: Oxford University Press.

MLA

Silen William, . Cope's early diagnosis of the acute abdomen. New York: Oxford University Press. 1979.