7Ferrari JR. North prevalence of procrastination in the United State~ United Kingdom, and Australia: arousal and avoidance delays among adults. Am I Psychol 2005;7(1): 1-6.
8Solomon LJ, Rothblum ED. Academic procrastination: frequency and cognitive behavioral correlations. J Couns Psychol 1984;31:503-9.
9Saddler CD, Sacks L Multidimensional perpectionism and academic procrastination: Ralationships with deperssion in university students[J]. Psychological Reports, 1993,73: 863-871.
10Ferrari JR. Self-handicapping by procrastinators: Protecting self-esteem, social-esteem. Journal of Research in Personality 1991;25:245-6.
