R. M. Reitan, R. M. (1955). The relation of the trail making test to organic brain damage. Journal of Consulting Psychology
Reitan R. M. (1958). Validity of the Trail Making test as an indicator of organic brain damage. Percept. Mot Skills, 8, 271-276.
Tombaugh, T.N.T.N (2004). "Trail Making test A and B: Normative Data Stratified by Age and Education". Archives of Clinical Neuropsychology : The Official Journal of the National Academy of Neuropsychologists 19 (2): 203–214.