APA (7th ed.) Citation

(1970). Open letter to supporters: 14 February 1970. May Day Manifesto.

Chicago Style (17th ed.) Citation

Open Letter to Supporters: 14 February 1970. London: May Day Manifesto, 1970.

MLA (8th ed.) Citation

Open Letter to Supporters: 14 February 1970. May Day Manifesto, 1970.

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