]> 2026-06-13T21:08:29+00:00 Help:Using textbook references 12 en Term 2008-05-28T23:48:47Z 2454615.4922107 Using textbook references 12 Using textbook references#DummitFoote 12 Using textbook references#AlperinBell 12 Using textbook references#RobinsonGT 12 Using textbook references#RobinsonAA 12 Using textbook references#Hungerford 12 Using textbook references#Herstein