People at Work: Modelling Human Performance in Shop Floor for Process Improvement in Manufacturing Enterprises. - Siti Nurhaida Khalil; Richard H. Weston; Joseph O. Ajaefobi (PRO-VE, 2009)

Modelling Human Resource Systems in Support of Efficient Production. - Siti Nurhaida Khalil; Richard H. Weston (BASYS, 2010)

Human systems modelling in support of enterprise engineering. - Siti Nurhaida Khalil; Joseph O. Ajaefobi; Richard H. Weston (Int. J. Manuf. Res., 2011)