Citace podle APA

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

Styl Chicago

Hughes, Phil, a Ed Ferrett. Introduction to Health and Safety at Work: The Handbook for the NEBOSH National General Certificate. 4th ed. Burlington: Butterworth-Heinemann, 2009.

Citace podle MLA

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

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