APA   Click to copy
Stadler, M., Shubeck, K., Greiff, S., & Graesser, A. (2020). Some critical reflections on the special issue. Collaboration in the 21st Century. The theory, assessment, and teaching of collaborative problem solving. Computers in Human Behavior, 104, 106135. https://doi.org/10.1016/j.chb.2019.09.011

Chicago/Turabian   Click to copy
Stadler, M., K. Shubeck, S. Greiff, and A Graesser. “Some Critical Reflections on the Special Issue. Collaboration in the 21st Century. The Theory, Assessment, and Teaching of Collaborative Problem Solving.” Computers in Human Behavior 104 (2020): 106135.

MLA   Click to copy
Stadler, M., et al. “Some Critical Reflections on the Special Issue. Collaboration in the 21st Century. The Theory, Assessment, and Teaching of Collaborative Problem Solving.” Computers in Human Behavior, vol. 104, 2020, p. 106135, doi:10.1016/j.chb.2019.09.011.

@article{stadler2020a,
  title = {Some critical reflections on the special issue. Collaboration in the 21st Century. The theory, assessment, and teaching of collaborative problem solving},
  year = {2020},
  journal = {Computers in Human Behavior},
  pages = {106135},
  volume = {104},
  doi = {10.1016/j.chb.2019.09.011},
  author = {Stadler, M. and Shubeck, K. and Greiff, S. and Graesser, A}
}