Não informado. (1992). Post-soviet Geography. V.H. Winston & Sons.
Chicagoスタイル(17版)引用形式Não informado. Post-soviet Geography. Silver Spring, Md: V.H. Winston & Sons, 1992.
MLA(8版)引用形式Não informado. Post-soviet Geography. V.H. Winston & Sons, 1992.
警告: この引用は必ずしも正確ではありません.