Clienti D, Issel M, Wells R, Link (Anderson) S, Lich KH. System dynamics approaches and collective action for community health: an integrative review. Am J Community Psychol. 2019 Jun;63(3-4):527-45. doi: 10.1002/ajcp.12305
Luciano JV, Barrada JR, Aguado J, Osma J, García-Campayo J. Bifactor analysis and construct validity of the HADS: a cross-sectional and longitudinal study in fibromyalgia patients. Psychological Assessment. 2014 Jun;26(2):395-406.