Grigg, D. (1992). An Introduction to agricultural geography. Routledge.
Chicagoスタイル(17版)引用形式Grigg, David. An Introduction to Agricultural Geography. London: Routledge, 1992.
MLA(9版)引用形式Grigg, David. An Introduction to Agricultural Geography. Routledge, 1992.
警告: この引用は必ずしも正確ではありません.