*[https://pubmed.ncbi.nlm.nih.gov/12943183/ Competition and cooperation in the five-factor model: individual differences in achievement orientation], ''The Journal of Psychology''. 2003 Jul;137(4):323-37. doi: 10.1080/00223980309600617. | *[https://pubmed.ncbi.nlm.nih.gov/12943183/ Competition and cooperation in the five-factor model: individual differences in achievement orientation], ''The Journal of Psychology''. 2003 Jul;137(4):323-37. doi: 10.1080/00223980309600617. |