basicmusictheory.com: D major perfect authentic cadence
The Complete Book of Scales, Chords, Arpeggios & Cadences: Includes All the Major, Minor (Natural, Harmonic, Melodic) & Chromatic Scales -- Plus Additional Instructions on Music Fundamentals: Palmer, Willard A., Manus, Morton,
Guide to Cadence Patterns | Frazier Piano Studio
Easy Cadence Chart - Easy n Fun Piano
FlyBFree.com - Cadences
Cadences - Music Theory Academy - Perfect, plagal, imperfect, interrupted