APA (7th ed.) Citation

(1939). May day 1939. New York, N.Y.bWorkers Library Publishers.

Chicago Style (17th ed.) Citation

May Day 1939. New York, N.Y.bWorkers Library Publishers, 1939.

MLA (8th ed.) Citation

May Day 1939. New York, N.Y.bWorkers Library Publishers, 1939.

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