Gaya APA

Gorbachev, M., Sondakh, B. (1992). Mikhail Gorbachev Perestroika . Jakarta: Erlangga.

Gaya MLA

Gorbachev, Michael., Sondakh, Boesoni. "Mikhail Gorbachev Perestroika". Jakarta: Erlangga, 1992. Text.