Cita APA (7th ed.)

Doughton, M., & Hooper, J. (2011). Legislation: Health and safety & environmental. Cengage Learning.

Cita Chicago (17th ed.)

Doughton, Malcolm, i John Hooper. Legislation: Health and Safety & Environmental. Hampshire, England: Cengage Learning, 2011.

Cita MLA (9th ed.)

Doughton, Malcolm, i John Hooper. Legislation: Health and Safety & Environmental. Cengage Learning, 2011.