Guardia de goma (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Guardia de goma" in Spanish language version.

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archive.org

Bravo, Eddie (2006). Mastering the Rubber Guard: Jiu Jitsu for Mixed Martial Arts Competition. Victory Belt Publishing. pp. 272. ISBN 0-9777315-9-6.

bjjtribes.com

«Gubber Guard - When Closed guard meets the lapel». BjjTribes (en inglés estadounidense). 12 de agosto de 2020. Consultado el 3 de septiembre de 2020.