APA

Hubback Eva M,, . (1947). The population of Britain. New York: Penguin Books.

Chicago

Hubback Eva M,, . 1947. The population of Britain. New York: Penguin Books.

Harvard

Hubback Eva M,, . (1947). The population of Britain. New York: Penguin Books.

MLA

Hubback Eva M,, . The population of Britain. New York: Penguin Books. 1947.