Gregory, J., & Thacker, R. (1987). Audiovisual resources in occupational health and safety: Films, videos and tape slides available from distributors in the United Kingdom. Health and Safety Executive.
Citación estilo ChicagoGregory, Jill, and Rosemary Thacker. Audiovisual Resources in Occupational Health and Safety: Films, Videos and Tape Slides Available from Distributors in the United Kingdom. Sheffield: Health and Safety Executive, 1987.
Cita MLAGregory, Jill, and Rosemary Thacker. Audiovisual Resources in Occupational Health and Safety: Films, Videos and Tape Slides Available from Distributors in the United Kingdom. Health and Safety Executive, 1987.
Warning: These citations may not always be 100% accurate.