Cita APA (7th ed.)

Boyce, R. R. (1982). Geographic perspectives on global problems: An introduction to geography. Wiley.

Cita Chicago (17th ed.)

Boyce, Ronald R. Geographic Perspectives on Global Problems: An Introduction to Geography. New York: Wiley, 1982.

Cita MLA (9th ed.)

Boyce, Ronald R. Geographic Perspectives on Global Problems: An Introduction to Geography. Wiley, 1982.