APA

Nordskog J. E., . (1950). Analyzing social problems. New York: Dryden Press.

Chicago

Nordskog John Eric, . 1950. Analyzing social problems. New York: Dryden Press.

Harvard

Nordskog J. E., . (1950). Analyzing social problems. New York: Dryden Press.

MLA

Nordskog John Eric, . Analyzing social problems. New York: Dryden Press. 1950.