Issued to
Julian Bretz
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Credential Verification
Issue date: January 15, 2026
ID: b716ae25-01f0-413a-a23f-fa2050418f4a
Issued by
The Marketing Leadership Masterclass
The Marketing Leadership Masterclass helps you build your influence and boost your career. From the world’s largest ever studies on marketers’ success. By Thomas Barta & Syl Saller.
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