APA (7th ed.) Citation

Ridley, J. R., & Channing, J. (1999). Safety at work (5th ed.). Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Ridley, John R., and John Channing. Safety at Work. 5th ed. Oxford: Butterworth-Heinemann, 1999.

MLA (9th ed.) Citation

Ridley, John R., and John Channing. Safety at Work. 5th ed. Butterworth-Heinemann, 1999.

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