* {{cite book | last=Armstrong | first=John Alexander | title=Ideology, Politics, and Government in the Soviet Union | publisher=University Press of America | publication-place=Lanham, MD | date=1986 | isbn=0-8191-5405-9}}
<ref name="d560">{{cite book | last=Armstrong | first=John Alexander | title=Ideology, Politics, and Government in the Soviet Union | publisher=University Press of America | publication-place=Lanham, MD | date=1986 | isbn=0-8191-5405-9 | page=}}</ref>