Krakor, R. (2012). Endoscopic mitral valve surgery: Handbook of minimal-invasive cardiac surgery. Walter de Gruyter.
Tohutoru Kātū Chicago (17th ed.)Krakor, Ralf. Endoscopic Mitral Valve Surgery: Handbook of Minimal-invasive Cardiac Surgery. Berlin: Walter de Gruyter, 2012.
Tohutoro MLA (9th ed.)Krakor, Ralf. Endoscopic Mitral Valve Surgery: Handbook of Minimal-invasive Cardiac Surgery. Walter de Gruyter, 2012.
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