The (Z) chord just means strumming with one hand while you cover your strings really lightly with the other hand that you form your chords. Creates a percussive sound as used by CCR in this song. We'll try it a few times. If it doesn't work, we'll revise the arrangement.
****WORD DOCUMENT REVISED AND REFORMATTED August 3 2015 - SR****
~~~ChordPro Verson UPDATED Aug 05, 2015 CEL~~~
A video for this song: