APA
, . (1973). USSR - Questions and answers:progress books about the USSR. Moscow: Progress Publishers.
Chicago
, . 1973. USSR - Questions and answers:progress books about the USSR. Moscow: Progress Publishers.
Harvard
, . (1973). USSR - Questions and answers:progress books about the USSR. Moscow: Progress Publishers.
MLA
, . USSR - Questions and answers:progress books about the USSR. Moscow: Progress Publishers. 1973.