APA aipamena

(2003). Our country's regions. New York: Macmillan/McGraw-Hill.

Chicago Style aipamena

Our Country's Regions. New York: Macmillan/McGraw-Hill, 2003.

MLA aipamena

Our Country's Regions. New York: Macmillan/McGraw-Hill, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.