APA (7th ed.) Citation

(1915). Commercial geography of the world (New ed. rev. and enl.). Sir Isaac Pitman & Sons.

Chicago Style (17th ed.) Citation

Commercial Geography of the World. New ed. rev. and enl. London: Sir Isaac Pitman & Sons, 1915.

MLA (9th ed.) Citation

Commercial Geography of the World. New ed. rev. and enl. Sir Isaac Pitman & Sons, 1915.