APA (7th ed.) Citation

(1990). Health and safety - UNISON poster, c. 1990. London.

Chicago Style (17th ed.) Citation

Health and Safety - UNISON Poster, C. 1990. London, 1990.

MLA (8th ed.) Citation

Health and Safety - UNISON Poster, C. 1990. London, 1990.

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