Wiggers, C. J. (1929). Principles and practice of electrocardiography. The C.V. Mosby Co..
Lua i Stíl Chicago (17ú heag.)Wiggers, Carl J. Principles and Practice of Electrocardiography. St. Louis: The C.V. Mosby Co., 1929.
Lua MLA (8ú heag.)Wiggers, Carl J. Principles and Practice of Electrocardiography. The C.V. Mosby Co., 1929.
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