Motley, Michael T.; Baars, Bernard J. (1979). "Effects of Cognitive Set Upon Laboratory Induced Verbal (Freudian) Slips". Journal of Speech, Language, and Hearing Research. 22 (3). American Speech Language Hearing Association: 421–432. doi:10.1044/jshr.2203.421. ISSN1092-4388. PMID502504.
Motley, Michael T.; Baars, Bernard J. (1979). "Effects of Cognitive Set Upon Laboratory Induced Verbal (Freudian) Slips". Journal of Speech, Language, and Hearing Research. 22 (3). American Speech Language Hearing Association: 421–432. doi:10.1044/jshr.2203.421. ISSN1092-4388. PMID502504.
Motley, Michael T.; Baars, Bernard J. (1979). "Effects of Cognitive Set Upon Laboratory Induced Verbal (Freudian) Slips". Journal of Speech, Language, and Hearing Research. 22 (3). American Speech Language Hearing Association: 421–432. doi:10.1044/jshr.2203.421. ISSN1092-4388. PMID502504.