Elving, G. J. (2002). Voice prosthetic valve failure due to biofilm formation. Rijksuniversiteit te Groningen.
Čikaški stil citiranja (17. izdanje)Elving, G. J. Voice Prosthetic Valve Failure Due to Biofilm Formation. Netherlands: Rijksuniversiteit te Groningen, 2002.
MLA način citiranja (8. izdanje)Elving, G. J. Voice Prosthetic Valve Failure Due to Biofilm Formation. Rijksuniversiteit te Groningen, 2002.
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