APA (7th ed.) Citation

Sinclair, U. (1949). This world of 1949 and what to do about it: Revised letters to a workingman on the economic and political situation. Haldeman-Julius Publications.

Chicago Style (17th ed.) Citation

Sinclair, Upton. This World of 1949 and What to Do About It: Revised Letters to a Workingman on the Economic and Political Situation. Girard, Kan.: Haldeman-Julius Publications, 1949.

MLA (8th ed.) Citation

Sinclair, Upton. This World of 1949 and What to Do About It: Revised Letters to a Workingman on the Economic and Political Situation. Haldeman-Julius Publications, 1949.