Cita APA (7a ed.)

Green, P. (1991). Drug couriers. Howard League for Penal Reform.

Cita Chicago Style (17a ed.)

Green, Penny. Drug Couriers. London: Howard League for Penal Reform, 1991.

Cita MLA (8a ed.)

Green, Penny. Drug Couriers. Howard League for Penal Reform, 1991.