Urban, D. Heine-Lenz-Zizka: Talk is silver, action is gold.
Cita Chicago Style (17a ed.)Urban, Dieter. Heine-Lenz-Zizka: Talk Is Silver, Action Is Gold.
Cita MLA (9a ed.)Urban, Dieter. Heine-Lenz-Zizka: Talk Is Silver, Action Is Gold.
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