APA

Auden W. H., . (1970). A certain world: a commonplace book. New York: Viking Press.

Chicago

Auden Wystan Hugh, . 1970. A certain world: a commonplace book. New York: Viking Press.

Harvard

Auden W. H., . (1970). A certain world: a commonplace book. New York: Viking Press.

MLA

Auden Wystan Hugh, . A certain world: a commonplace book. New York: Viking Press. 1970.