Dyfyniad APA
Ruddell, R. (2004). America behind bars: Trends in imprisonment, 1950 to 2000. LFB Scholarly Pub..
Dyfyniad Arddull Chicago
Ruddell, Rick. America Behind Bars: Trends in Imprisonment, 1950 to 2000. New York: LFB Scholarly Pub., 2004.
Dyfyniad MLA
Ruddell, Rick. America Behind Bars: Trends in Imprisonment, 1950 to 2000. LFB Scholarly Pub., 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.