APA (7th ed.) Citation

Sobel, L. A. (1978). Political prisoners: A world report. Facts on File.

Chicago Style (17th ed.) Citation

Sobel, Lester A. Political Prisoners: A World Report. New York: Facts on File, 1978.

MLA (9th ed.) Citation

Sobel, Lester A. Political Prisoners: A World Report. Facts on File, 1978.