Plenary sessions, apparatus heads, ethnicity (by clicking on the individual names on "The Central Committee elected by the VIIth Congress of the RCP (B) 03.08.1918 members" reference), the Central Committee full- and candidate membership, Bureau membership, Secretariat membership and Orgburo membership were taken from these sources:
^ abcdRiga, Liliana (2012). The Bolsheviks and the Russian Empire. Cambridge University Press. pp. 60 and 304.
^Ivkin, V.I. Государственная власть СССР. Высшие органы власти и управления и их руководители. 1923—1991 гг. Историко-биографический справочни (in Russian). Moscow. p. 605.