Cita APA (7a ed.)

Sobel, L. A., & Grant, A. (1978). Political prisoners: A world report. Facts on file.

Cita Chicago Style (17a ed.)

Sobel, Lester A., y Alexander Grant. Political Prisoners: A World Report. New York: Facts on file, 1978.

Cita MLA (8a ed.)

Sobel, Lester A., y Alexander Grant. Political Prisoners: A World Report. Facts on file, 1978.