Soto, C. J.,& John, O. P. (2017). The next big five inventory (BFI-2): Developing and assessing a hierarchical model with 15 facets to enhance bandwidth, fidelity, and predictive power. Journal of Personality and Social Psychology, 113, 117-143. 

Also see authorized online version: Koerth-Baker & Wolfe (2019). Most personality quizzes are junk science. Take one that isn't. FiveThirtyEight. https://projects.fivethirtyeight.com/personality-quiz/