APA Format
Kaiser, Robert G. 1943-. (1991).
Why Gorbachev Happened : His Triumphs And His Failure / Robert G. Kaiser
. New York :: Simon & Schuster,.
MLA Format
Kaiser, Robert G. 1943-.
Why Gorbachev Happened : His Triumphs And His Failure / Robert G. Kaiser
. New York :: Simon & Schuster,, 1991
Chicago Format
Kaiser, Robert G. 1943-. Why Gorbachev Happened : His Triumphs And His Failure / Robert G. Kaiser. New York :: Simon & Schuster,, 1991.