APA   Click to copy
Gnaldi, M., Bacci, S., Kunze, T., & Greiff, S. (2020). Students’ complex problem solving profiles. Psychometrika, 85, 461–501. https://doi.org/10.1007/s11336-020-09709-2

Chicago/Turabian   Click to copy
Gnaldi, M., S. Bacci, T. Kunze, and S. Greiff. “Students’ Complex Problem Solving Profiles.” Psychometrika 85 (2020): 461–501.

MLA   Click to copy
Gnaldi, M., et al. “Students’ Complex Problem Solving Profiles.” Psychometrika, vol. 85, 2020, pp. 461–501, doi:10.1007/s11336-020-09709-2.

@article{gnaldi2020a,
  title = {Students’ complex problem solving profiles},
  year = {2020},
  journal = {Psychometrika},
  pages = {461-501},
  volume = {85},
  doi = {10.1007/s11336-020-09709-2},
  author = {Gnaldi, M. and Bacci, S. and Kunze, T. and Greiff, S.}
}