APA (7th ed.) Citation

Baer, J. B., & Woodruff, G. P. (1929). Commodity exchanges. Harper.

Chicago Style (17th ed.) Citation

Baer, Julius B., and George P. Woodruff. Commodity Exchanges. New York [u.a.]: Harper, 1929.

MLA (9th ed.) Citation

Baer, Julius B., and George P. Woodruff. Commodity Exchanges. Harper, 1929.