Maruthappu, M. ., & Williams, C. . The biomarket. Global Public Health, 8(1), 106-19. https://doi.org/10.1080/17441692.2012.758300 (Original work published 2013)

Husain, N. ., Tofique, S. ., Chaudhry, I. ., Kiran, T. ., Taylor, P. ., Williams, C. ., … Chaudhry, N. . (2022). Youth Culturally adapted Manual Assisted Problem Solving Training (YCMAP) in Pakistani adolescent with a history of self-harm: protocol for multicentre clinical and cost-effectiveness randomised controlled trial. BMJ Open, 12(5), e056301. https://doi.org/10.1136/bmjopen-2021-056301 (Original work published 2022)