APA aipamena

HUNTINGTON, E. (1947). Principles of Economic Geography. John Wiley & Sons.

Chicago Style aipamena

HUNTINGTON, Ellsworth. Principles of Economic Geography. John Wiley & Sons, 1947.

MLA aipamena

HUNTINGTON, Ellsworth. Principles of Economic Geography. John Wiley & Sons, 1947.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.