Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.