(1977). History of the ussr. Moscow: Progress publishers.
Trích dẫn kiểu ChicagoHistory of the Ussr. Moscow: Progress publishers, 1977.
MLA引文History of the Ussr. Moscow: Progress publishers, 1977.
警告：這些引文格式不一定是100％准確.
APA引文
(1977). History of the ussr. Moscow: Progress publishers.
Trích dẫn kiểu ChicagoHistory of the Ussr. Moscow: Progress publishers, 1977.
MLA引文History of the Ussr. Moscow: Progress publishers, 1977.