Symonds, E. M., Chang, A., & Sahota, D. (2001). Fetal electrocardiography. Imperial College Press ; Distributed by World Scientific Pub. Co..
Chicago-viite (17. p.)Symonds, E. M., Allan Chang, ja Daljit Sahota. Fetal Electrocardiography. London : River Edge, NJ: Imperial College Press ; Distributed by World Scientific Pub. Co., 2001.
MLA-viite (9. p.)Symonds, E. M., et al. Fetal Electrocardiography. Imperial College Press ; Distributed by World Scientific Pub. Co., 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.