APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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