APA

Hacker A., . (1970). The end of the American era. New York: Atheneum.

Chicago

Hacker Andrew, . 1970. The end of the American era. New York: Atheneum.

Harvard

Hacker A., . (1970). The end of the American era. New York: Atheneum.

MLA

Hacker Andrew, . The end of the American era. New York: Atheneum. 1970.