http://www.vitaeducation.org/wp-content/uploads/2010/05/Regular-Past-Tense-Pronunciation-Handout.pdf (Regular verbs with pronunciation d / t / id)
http://www.chompchomp.com/handouts/irregularrules01.pdf (Irregular verb list)
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/pasted1.htm (regular verbs)