John M. Oldham, Andrew E. Skodol, Donna S. Bender (2005) "The American Psychiatric Publishing Textbook Of Personality Disorders", ISBN1-58562-159-5p. 96
doi.org
Watson, David; Clark, Lee A.; Tellegen, Auke (1988-01-01). "Development and validation of brief measures of positive and negative affect: the PANAS scales". Journal of Personality and Social Psychology. 54 (6): 1063–70. doi:10.1037/0022-3514.54.6.1063. PMID3397865. S2CID7679194.
nih.gov
pubmed.ncbi.nlm.nih.gov
Watson, David; Clark, Lee A.; Tellegen, Auke (1988-01-01). "Development and validation of brief measures of positive and negative affect: the PANAS scales". Journal of Personality and Social Psychology. 54 (6): 1063–70. doi:10.1037/0022-3514.54.6.1063. PMID3397865. S2CID7679194.
Watson, David; Clark, Lee A.; Tellegen, Auke (1988-01-01). "Development and validation of brief measures of positive and negative affect: the PANAS scales". Journal of Personality and Social Psychology. 54 (6): 1063–70. doi:10.1037/0022-3514.54.6.1063. PMID3397865. S2CID7679194.