Walker, W. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
Čikaški stil citiranja (17. izdanje)Walker, William. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
MLA način citiranja (9. izdanje)Walker, William. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
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