Weiss, Elisabeth M.; Ragland, J. Daniel; Brensinger, Colleen M.; Bilker, Warren B.; Deisenhammer, Eberhard A.; Delazer, Margarete (2006). “Sex differences in clustering and switching in verbal fluency tasks”. Journal of the International Neuropsychological Society12 (4): 502–9. doi:10.1017/S1355617706060656. PMID16981602.
Weiss, Elisabeth M.; Ragland, J. Daniel; Brensinger, Colleen M.; Bilker, Warren B.; Deisenhammer, Eberhard A.; Delazer, Margarete (2006). “Sex differences in clustering and switching in verbal fluency tasks”. Journal of the International Neuropsychological Society12 (4): 502–9. doi:10.1017/S1355617706060656. PMID16981602.