Piper, P. J., & Krell, R. D. Advances in the understanding and treatment of asthma.
Čikaški stil citiranja (17. izdanje)Piper, Priscilla J., i Robert D. Krell. Advances in the Understanding and Treatment of Asthma.
MLA način citiranja (8. izdanje)Piper, Priscilla J., i Robert D. Krell. Advances in the Understanding and Treatment of Asthma.
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