United Center for Research and Training in History, United Centre for History, Bʺlgarska akademiâ na naukite. Institut po istoriâ, Bʺlgarska akademiâ na naukite. Institut za istoričeski izsledvaniâ, & Bʺlgarska akademiâ na naukite. Akademično izdatelstvo. (1973). Bulgarian Historical Review. Publishing House of the Bulgarian Academy of Sciences.
Cytowanie według stylu Chicago (wyd. 17)United Center for Research and Training in History, United Centre for History, Bʺlgarska akademiâ na naukite. Institut po istoriâ, Bʺlgarska akademiâ na naukite. Institut za istoričeski izsledvaniâ, i Bʺlgarska akademiâ na naukite. Akademično izdatelstvo. Bulgarian Historical Review. Sofia: Publishing House of the Bulgarian Academy of Sciences, 1973.
Cytowanie według stylu MLA (wyd. 9)United Center for Research and Training in History, et al. Bulgarian Historical Review. Publishing House of the Bulgarian Academy of Sciences, 1973.