APA (7th ed.) Citation

Groves, R. (1949). Sharpen the sickle!: The history of the farm workers' union. Porcupine.

Chicago Style (17th ed.) Citation

Groves, Reg. Sharpen the Sickle!: The History of the Farm Workers' Union. London: Porcupine, 1949.

MLA (8th ed.) Citation

Groves, Reg. Sharpen the Sickle!: The History of the Farm Workers' Union. Porcupine, 1949.

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