APA (7th ed.) Citation

Hale, A., Harvey, H., Mennozi, M., Miguel, S., & Bianchi, G. Certification of Safety professionals at the European level.

Chicago Style (17th ed.) Citation

Hale, A., H. Harvey, M. Mennozi, S. Miguel, and G. Bianchi. Certification of Safety Professionals at the European Level.

MLA (9th ed.) Citation

Hale, A., et al. Certification of Safety Professionals at the European Level.