DRE 7-Day School ManualsApril 1993Student ManualAugust 1999Instructor Manual | Student ManualMay 2002Instructor ManualSeptember 2002Instructor Manual | Student ManualJanuary 2006Instructor Manual | Student ManualJanuary 2007Instructor Manual | Student ManualJanuary 2010Instructor Manual | Student ManualJanuary 2011Instructor Manual | Student ManualMay 2013Instructor Manual | Student ManualOctober 2015Instructor Manual | Student Manual