Dyfyniad APA

BOYCE, R. R. (1982). Geographic perspectives on global problems: An introduction to geography. John Wiley and Sons.

Dyfyniad Arddull Chicago

BOYCE, Ronald Reed. Geographic Perspectives on Global Problems: An Introduction to Geography. New York: John Wiley and Sons, 1982.

Dyfyniad MLA

BOYCE, Ronald Reed. Geographic Perspectives on Global Problems: An Introduction to Geography. John Wiley and Sons, 1982.

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