Walters, David; Nichols, Theo . (2009). Workplace... : Worker representation on health and safety in the UK - problems with the preferred model and beyond, ( Ket. lihat Bab. 1 ) ( halaman 19-30 ). New York : Palgrave Macmillan

Walters, David; Nichols, Theo . Workplace... : Worker representation on health and safety in the UK - problems with the preferred model and beyond, ( Ket. lihat Bab. 1 ) ( halaman 19-30 ). New York : Palgrave Macmillan, 2009

Walters, David; Nichols, Theo . 2009. Workplace... : Worker representation on health and safety in the UK - problems with the preferred model and beyond, ( Ket. lihat Bab. 1 ) ( halaman 19-30 ). Palgrave Macmillan, New York