Useem, B., & Kimball, P. (1991). States of siege: U.S. prison riots, 1971-1986. Oxford University Press.
Dyfyniad Arddull ChicagoUseem, Bert, and Peter Kimball. States of Siege: U.S. Prison Riots, 1971-1986. New York: Oxford University Press, 1991.
Dyfyniad MLAUseem, Bert, and Peter Kimball. States of Siege: U.S. Prison Riots, 1971-1986. Oxford University Press, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.