James E. Maddux, Barbara A. Winstead Psychopathology: foundations for a contemporary understandingRoutledge, 2005 Retrieved 2012-02-06
Daniel R. Weinberger (U.S. National Institute of Health), Paul Harrison (University Department of Psychiatry Oxford) - Schizophrenia - 736 pages John Wiley & Sons, 13 Jul 2011 Retrieved 2012-01-22 ISBN1-4443-4774-8
Gerlach J., Lühdorf K. (1975). "The effect of L-dopa on young patients with simple schizophrenia, treated with neuroleptic drugs: a double-blind cross-over trial with Madopar and placebo". Psychopharmacologia. 44 (1): 105–10. doi:10.1007/bf00421193. PMID706. S2CID20599379.
Gregory, Carol A.; McKenna, Peter J.; Hodges, John R. (1998). "Dementia of frontal type and simple schizophrenia: Two sides of the same coin?". Neurocase. 4 (1): 1–6. doi:10.1080/13554799808410601.
Black, D. W.; Boffeli, T. J. (1989). "Simple schizophrenia: past, present, and future". The American Journal of Psychiatry. 146 (10): 1267–1273. doi:10.1176/ajp.146.10.1267. PMID2675642.
Armenian Medical Network - subtypes-of-schizophrenia Retrieved 2012-01-31 [content is found under heading Course and sub-types of schizophrenia]
J.K. Wing and N. Agrawal (ed, S. R. Hirsch. - Professor of Psychiatry Emeritus, D. R. Weinberger - Chief, Clinical Brain Disorders Branch Intramural Research Program [1] Retrieved 2012-01-31
Gerlach J., Lühdorf K. (1975). "The effect of L-dopa on young patients with simple schizophrenia, treated with neuroleptic drugs: a double-blind cross-over trial with Madopar and placebo". Psychopharmacologia. 44 (1): 105–10. doi:10.1007/bf00421193. PMID706. S2CID20599379.
Black, D. W.; Boffeli, T. J. (1989). "Simple schizophrenia: past, present, and future". The American Journal of Psychiatry. 146 (10): 1267–1273. doi:10.1176/ajp.146.10.1267. PMID2675642.
Joseph Zelmanowits - A Historical Note on the Simple Dementing Form of Schizophrenia Proc R Soc Med. 1953 November; 46(11): 931–933. Proceedings of the Royal Society of Medicine Retrieved 2012-02-01
Canadian Medical Association Journal - Schizophrenia: Simple-type Deteriorated—1951; Sound; B & W; 11 minutes - Can Med Assoc J. 1959 September 15; 81(6): 499. PMC1831211 Retrieved 2012-01-22
Gerlach J., Lühdorf K. (1975). "The effect of L-dopa on young patients with simple schizophrenia, treated with neuroleptic drugs: a double-blind cross-over trial with Madopar and placebo". Psychopharmacologia. 44 (1): 105–10. doi:10.1007/bf00421193. PMID706. S2CID20599379.