APA aipamena

BLIJ, H. J. D. Geography: Region and concepts. John Wiley & Sons.

Chicago Style aipamena

BLIJ, Harm J. De. Geography: Region and Concepts. John Wiley & Sons.

MLA aipamena

BLIJ, Harm J. De. Geography: Region and Concepts. John Wiley & Sons.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.