1. Abramson, P., and R. Inglehart. 1995. Value change in global perspective. Ann Arbor: University of Michigan Press.
2. Aerts, D., M. Czachor, L. Gabora, M. Kuna, A. Posiewnik, J. Pykacz, and M. Syty. 2003. Quantum morphogenesis: A variation on Thom’s catastrophe theory. Physics Review E 67: 051926.
3. Agyeman, J., R. Bullard, and B. Evans. 2003. Just sustainabilities: Development in an unequal world. Cambridge: MIT Press.
4. Alessandri, G., E. Perinelli, E. De Longis, and A. Theodorou. 2018. Second-order growth mixture modeling in organizational psychology: An application in the study of job performance using the cusp catastrophe model. Nonlinear Dynamics, Psychology, and Life Sciences 22: 53–76.
5. Anderson, B., J. Romani, H. Phillips, M. Wentzel, and K. Tlabela. 2007. Exploring environmental perceptions, behaviors and awareness: Water and water pollution in South Africa. Population and Environment 28: 135–161.