How accurate are performance appraisals?. Winstanley NB. Pers Adm. 1980 Aug;25(8):55-8. PMID: 10248160
Performance evaluation of subordinates. O'Donovan TR. Superv Nurse. 1971 Nov;2(11):48-57. doi: 10.1097/00006247-197111000-00009. PMID: 5209673