Mustapha, OA, Coffey, M and Birkett, JW (2015) Mass balance calculations of illicit drugs in Stoke Bardolph Sewage treatment works, United Kingdom. Al-Hikmah Journal of Pure & Applied Sciences, 1. pp. 27-39.

Birkett, JW, Olajide, MA and Coffey, M (2014) Fate of drugs and their metabolites in the environment. Elixir Applied Chemistry, 69. pp. 22974-22999. ISSN 2229-712X

Olajide, MA, Coffey, M and Birkett, JW (2014) Degradation of some illicit compounds in sewage sludge batch tests. Elixir Applied Chemistry, 68B. pp. 22739-22751. ISSN 2229-712X

Coffey, M (2004) Stress in the workplace : an action research case study of social services. Doctoral thesis, Liverpool John Moores University.