APA (7th ed.) Citation

Ridley, J. R. (1990). Safety at work (3rd ed.). Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Ridley, John R. Safety at Work. 3rd ed. London: Butterworth-Heinemann, 1990.

MLA (8th ed.) Citation

Ridley, John R. Safety at Work. 3rd ed. Butterworth-Heinemann, 1990.

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