Everard ML(February 2009).„Acute bronchiolitis and croup”.Pediatr. Clin. North Am.svezak 56.(broj 1): str. 119.–133., x–xi.DOI:10.1016/j.pcl.2008.10.007.PMID19135584.
Russell KF, Liang Y, O'Gorman K, Johnson DW, Klassen TP(2011).Klassen, Terry P.ur.„Glucocorticoids for croup”.Cochrane Database Syst Rev1(1): str. CD001955..DOI:10.1002/14651858.CD001955.pub3.PMID21249651.
Port C.(April 2009).„Towards evidence based emergency medicine: best BETs from the Manchester Royal Infirmary. BET 4. Dose of dexamethasone in croup”.Emerg Med Jsvezak 26.(broj 4): str. 291.–292..DOI:10.1136/emj.2009.072090.PMID19307398.
Vorwerk C, Coats T(2010).Vorwerk, Christiane.ur.„Heliox for croup in children”.Cochrane Database Syst Revsvezak 2.(broj 2): str. CD006822..DOI:10.1002/14651858.CD006822.pub2.PMID20166089.
Everard ML(February 2009).„Acute bronchiolitis and croup”.Pediatr. Clin. North Am.svezak 56.(broj 1): str. 119.–133., x–xi.DOI:10.1016/j.pcl.2008.10.007.PMID19135584.
Russell KF, Liang Y, O'Gorman K, Johnson DW, Klassen TP(2011).Klassen, Terry P.ur.„Glucocorticoids for croup”.Cochrane Database Syst Rev1(1): str. CD001955..DOI:10.1002/14651858.CD001955.pub3.PMID21249651.
Port C.(April 2009).„Towards evidence based emergency medicine: best BETs from the Manchester Royal Infirmary. BET 4. Dose of dexamethasone in croup”.Emerg Med Jsvezak 26.(broj 4): str. 291.–292..DOI:10.1136/emj.2009.072090.PMID19307398.