Citazione Stile APA (7a Edizione)

Hughes, P., & Ferrett, E. (2009). Introduction to health and safety at work: The handbook for the NEBOSH national general certificate (4th ed.). Elsevier.

Citazione stile Chigago Style (17a edizione)

Hughes, Phil, e Ed Ferrett. Introduction to Health and Safety at Work: The Handbook for the NEBOSH National General Certificate. 4th ed. Amsterdam: Elsevier, 2009.

Citatione MLA (9a ed.)

Hughes, Phil, e Ed Ferrett. Introduction to Health and Safety at Work: The Handbook for the NEBOSH National General Certificate. 4th ed. Elsevier, 2009.