Peralta, Victor; Cuesta, Manuel J.; de Leon, Jose (March 1992). "Formal thought disorder in schizophrenia: A factor analytic study". Comprehensive Psychiatry. 33 (2): 105–110. doi:10.1016/0010-440X(92)90005-B. PMID1544294.
Sass, Louis; Pienkos, Elizabeth (September 2015). "Beyond words: linguistic experience in melancholia, mania, and schizophrenia". Phenomenology and the Cognitive Sciences. 14 (3): 475–495. doi:10.1007/s11097-013-9340-0. S2CID254947008.
Peralta, Victor; Cuesta, Manuel J.; de Leon, Jose (March 1992). "Formal thought disorder in schizophrenia: A factor analytic study". Comprehensive Psychiatry. 33 (2): 105–110. doi:10.1016/0010-440X(92)90005-B. PMID1544294.
Sass, Louis; Pienkos, Elizabeth (September 2015). "Beyond words: linguistic experience in melancholia, mania, and schizophrenia". Phenomenology and the Cognitive Sciences. 14 (3): 475–495. doi:10.1007/s11097-013-9340-0. S2CID254947008.