Cita APA (7a ed.)

Morris, N., & Hawkins, G. (1977). Letter to the President on crime control. Univ. of Chicago Pr.

Cita Chicago Style (17a ed.)

Morris, Norval, y Gordon Hawkins. Letter to the President on Crime Control. Chicago [u.a.]: Univ. of Chicago Pr, 1977.

Cita MLA (8a ed.)

Morris, Norval, y Gordon Hawkins. Letter to the President on Crime Control. Univ. of Chicago Pr, 1977.