* {{cite book | last=Dalakas | first=Marinos C. | last2=Bartfeld | first2=Harry | last3=Kurland | first3=Leonard T. | title=The Post-polio Syndrome | publisher=New York Academy of Sciences | publication-place=New York, NY | date=1995 | isbn=0-89766-918-5}}
<ref name="y466">{{cite book | last=Dalakas | first=Marinos C. | last2=Bartfeld | first2=Harry | last3=Kurland | first3=Leonard T. | title=The Post-polio Syndrome | publisher=New York Academy of Sciences | publication-place=New York, NY | date=1995 | isbn=0-89766-918-5 | page=}}</ref>