APA (7th ed.) Citation

Ridley, J. R., & Channing, J. (2003). Safety at work (6th ed.). Butterworth Heinemann.

Chicago Style (17th ed.) Citation

Ridley, John R., and John Channing. Safety at Work. 6th ed. Amsterdam ; London: Butterworth Heinemann, 2003.

MLA (9th ed.) Citation

Ridley, John R., and John Channing. Safety at Work. 6th ed. Butterworth Heinemann, 2003.

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