Shallice, T. (1982). Specific impairments of planning. Philosophical Transcripts of the Royal Society of London, B298, 199–209.
Krikorian, R., Bartok, J. & Gay, N. (1994) Tower of London procedure: a standard method and developmental data. Journal of Clinical Experimental Neuropsychology, 16, 840–850.
Anderson, P., Anderson, V., & Lajoie, G. (1996). The Tower of London test: Validation and standardization for pediatric populations. The Clinical Neuropsychologist, 10, 55 - 65.
Schnirman, G.M., Welsh, M.C., Retzlaff, P.D. (1998). Development of the Tower of London-Revised. Assessment, 5, 355–360.
Berg, W. K. & Byrd, D. L. (2002) The Tower of London Spatial Problem Solving Task: Enhancing Clinical and Research Implementation. Journal of Experimental and Clinical Neuropsychology, 25, 586-604.