APA (7th ed.) Citation

Riddell, W. A. (1926). The influence of machinery on agricultural conditions in North America. International Labour Organization.

Chicago Style (17th ed.) Citation

Riddell, Walter Alexander. The Influence of Machinery on Agricultural Conditions in North America. International Labour Organization, 1926.

MLA (9th ed.) Citation

Riddell, Walter Alexander. The Influence of Machinery on Agricultural Conditions in North America. International Labour Organization, 1926.

Warning: These citations may not always be 100% accurate.