APA

Davis W. J., . (1979). The seventh year. New York [u.a.]: Norton.

Chicago

Davis William J, . 1979. The seventh year. New York [u.a.]: Norton.

Harvard

Davis W. J., . (1979). The seventh year. New York [u.a.]: Norton.

MLA

Davis William J, . The seventh year. New York [u.a.]: Norton. 1979.