Symonds, E. M., Chang, A., & Sahota, D. (2001). Fetal electrocardiography. Imperial College Press ; Distributed by World Scientific Pub. Co..
Chicago-čujuhus (17. p.)Symonds, E. M., Allan Chang, juo Daljit Sahota. Fetal Electrocardiography. London : River Edge, NJ: Imperial College Press ; Distributed by World Scientific Pub. Co., 2001.
MLA-čujuhus (9. p.)Symonds, E. M., et al. Fetal Electrocardiography. Imperial College Press ; Distributed by World Scientific Pub. Co., 2001.
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