XIth plenum of the Executive Committee of the Communist International :
theses, resolutions, and decisions.
APA Citation
Communist International. Executive Committee. (1967). XIth plenum of the Executive Committee of the Communist International: theses, resolutions, and decisions. London: Modern Books.
MLA Citation
Communist International. Executive Committee. XIth Plenum of the Executive Committee of the Communist International: Theses, Resolutions, And Decisions. London: Modern Books, 1967.
Warning: These citations may not always be complete (especially for serials).