APA

Bulgarian Academy of Sciences. Institute of History, Voynov M., Kosev D. K., Hristov H. A. & Bulgarian Academy of Sciences. (1969). Documents and materials on the history of the Bulgarian people. Sofia: Publishing House of the Bulgarian Academy of Sciences.

Chicago

Bulgarian Academy of Sciences. Institute of History, Voynov M, Kosev Dimitŭr Konstantinov, Hristov Hristo Angelov and Bulgarian Academy of Sciences. 1969. Documents and materials on the history of the Bulgarian people. Sofia: Publishing House of the Bulgarian Academy of Sciences.

Harvard

Bulgarian Academy of Sciences. Institute of History, Voynov M., Kosev D. K., Hristov H. A. and Bulgarian Academy of Sciences. (1969). Documents and materials on the history of the Bulgarian people. Sofia: Publishing House of the Bulgarian Academy of Sciences.

MLA

Bulgarian Academy of Sciences. Institute of History, Voynov M, Kosev Dimitŭr Konstantinov, Hristov Hristo Angelov and Bulgarian Academy of Sciences. Documents and materials on the history of the Bulgarian people. Sofia: Publishing House of the Bulgarian Academy of Sciences. 1969.