 Addington J, Cadenhead KS, Cannon TD; et al. (2007). "North American prodrome longitudinal study: a collaborative multisite approach to prodromal schizophrenia research". Schizophrenia Bulletin. 33 (3): 665–72. doi:10.1093/schbul/sbl075. PMC 2526151. PMID 17255119. {{cite journal}}: Explicit use of et al. in: |author= (help)CS1 maint: multiple names: authors list (link)↑ Cullen KR, Kumra S, Regan J; et al. (2008). "Atypical Antipsychotics for Treatment of Schizophrenia Spectrum Disorders". Psychiatric Times. 25 (3). 2008-12-28 දින මුල් පිටපත වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්‍රවේශය 2014-04-05. {{cite journal}}: Explicit use of et al. in: |author= (help)CS1 maint: multiple names: authors list (link)↑ Amminger GP, Leicester S, Yung AR; et al. (2006). "Early onset of symptoms predicts conversion to non-affective psychosis in ultra-high risk individuals". Schizophrenia Research. 84 (1): 67–76. doi:10.1016/j.schres.2006.02.018. PMID 16677803. {{cite journal}}: Explicit use of et al. in: |a