There are numerous locations on the internet where data flow templates can be found. Here are a few of the sites where you can find and use DFD templates.
Flowcharttools (depiction of what a template should look like) – Click here
Sample of what a Data Flow Diagram looks like (click here)
Sample DFD at docstoc (click here)
Samples at Gene Sarson (click here)
Templates at smartdraw (click here)
Example of DFD at conceptdraw (click here)
Visio and Word templates for DFD (click here)
Flowchart samples at edrawsoft (click here)
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