Dyfyniad APA

executive, H. a. s. (2007). Memorandum of guidance on the electricity at work regulations 1989. New York, NY : Health and Safety Executive.

Dyfyniad Arddull Chicago

executive, Health and safety. Memorandum of Guidance on the Electricity at Work Regulations 1989. New York, NY : Health and Safety Executive, 2007.

Dyfyniad MLA

executive, Health and safety. Memorandum of Guidance on the Electricity at Work Regulations 1989. New York, NY : Health and Safety Executive, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.