Dunbar, G. S. (1991). Modern geography: An encyclopedic survey. Garland.
Chicagoスタイル(17版)引用形式Dunbar, Gary S. Modern Geography: An Encyclopedic Survey. New York: Garland, 1991.
MLA(9版)引用形式Dunbar, Gary S. Modern Geography: An Encyclopedic Survey. Garland, 1991.
警告: この引用は必ずしも正確ではありません.