Cristiano 'High Achiever' Ronaldo: Analisis Kepribadian High-Achieving Person Cristiano Ronaldo Melalui Sudut Pandang Trait Personality Psychology

Anglim J, O'Connor P. 2019 "Measurement and research using the Big Five, HEXACO,and narrow traits: A primer for researchers and practitioners" Australian Journal of Psychology. 71:16--25

Bauke C via Walden University. 2024 "The Psychology of High Achievers" https://www.waldenu.edu/online-masters-programs/ms-in-psychology/resource/the-psychology-of-high-achievers diakses 21 Mei pukul 08.29