Supported by the following organizations
This is to certify that Renata W Diffley successfully completed and received a passing grade in AESTHINT15: Rhetoric: The Art of Persuasive Writing and Public Speaking a course of study offered by HarvardX, an online learning initiative of Harvard University.
Noted by
James Engell
Gurney Professor of English and Professor of Comparative Literature Harvard University
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- Verified Certificate Issued November 27, 2025
- Valid Certificate ID 92d83adfb8e24bbbbe826190bc17c42e