Winsor, T. (1956). Electrocardiographic Test Book.
Chicago-čujuhus (17. p.)Winsor, Travis. Electrocardiographic Test Book. 1956.
MLA-čujuhus (9. p.)Winsor, Travis. Electrocardiographic Test Book. 1956.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.